diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsole.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsole.kt
index a0f2805d8..a6d2f743d 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsole.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsole.kt
@@ -19,6 +19,7 @@ import net.mamoe.mirai.Bot
 import net.mamoe.mirai.console.MiraiConsole.INSTANCE
 import net.mamoe.mirai.console.MiraiConsoleImplementation.Companion.start
 import net.mamoe.mirai.console.internal.MiraiConsoleImplementationBridge
+import net.mamoe.mirai.console.internal.util.childScopeContext
 import net.mamoe.mirai.console.plugin.PluginLoader
 import net.mamoe.mirai.console.plugin.center.PluginCenter
 import net.mamoe.mirai.console.plugin.jvm.JarPluginLoader
@@ -87,7 +88,7 @@ public interface MiraiConsole : CoroutineScope {
          */ // MiraiConsole.INSTANCE.getJob()
         public val job: Job
             get() = MiraiConsole.coroutineContext[Job]
-                ?: throw IllegalMiraiConsoleImplementationError("Internal error: Job not found in MiraiConsole.coroutineContext")
+                ?: throw MalformedMiraiConsoleImplementationError("Internal error: Job not found in MiraiConsole.coroutineContext")
 
         /**
          * 添加一个 [Bot] 实例到全局 Bot 列表, 但不登录.
@@ -102,6 +103,7 @@ public interface MiraiConsole : CoroutineScope {
             Bot(id, password) {
                 fileBasedDeviceInfo()
                 redirectNetworkLogToDirectory()
+                parentCoroutineContext = MiraiConsole.childScopeContext()
 
                 this.loginSolver = MiraiConsoleImplementationBridge.createLoginSolver(id, this)
                 configuration()
@@ -119,8 +121,10 @@ public val MiraiConsole.rootDir: File get() = rootPath.toFile()
  *
  * @see MiraiConsoleImplementation.start
  */
-public class IllegalMiraiConsoleImplementationError @JvmOverloads constructor(
-    public override val message: String? = null,
-    public override val cause: Throwable? = null
-) : Error()
+public class MalformedMiraiConsoleImplementationError : Error {
+    public constructor() : super()
+    public constructor(message: String?) : super(message)
+    public constructor(message: String?, cause: Throwable?) : super(message, cause)
+    public constructor(cause: Throwable?) : super(cause)
+}
 
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsoleImplementation.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsoleImplementation.kt
index 816405aa1..1efa9ecac 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsoleImplementation.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsoleImplementation.kt
@@ -81,6 +81,7 @@ public interface MiraiConsoleImplementation : CoroutineScope {
     public val dataStorageForJarPluginLoader: PluginDataStorage
     public val configStorageForJarPluginLoader: PluginDataStorage
     public val dataStorageForBuiltIns: PluginDataStorage
+    public val configStorageForBuiltIns: PluginDataStorage
 
     /**
      * @see ConsoleInput 的实现
@@ -111,7 +112,7 @@ public interface MiraiConsoleImplementation : CoroutineScope {
         /** 由前端调用, 初始化 [MiraiConsole] 实例, 并启动 */
         @JvmStatic
         @ConsoleFrontEndImplementation
-        @Throws(IllegalMiraiConsoleImplementationError::class)
+        @Throws(MalformedMiraiConsoleImplementationError::class)
         public fun MiraiConsoleImplementation.start(): Unit = initLock.withLock {
             this@Companion.instance = this
             MiraiConsoleImplementationBridge.doStart()
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/BuiltInCommands.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/BuiltInCommands.kt
index 810bfe48b..43457b588 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/BuiltInCommands.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/BuiltInCommands.kt
@@ -14,13 +14,20 @@ import kotlinx.coroutines.cancelAndJoin
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
+import net.mamoe.mirai.Bot
 import net.mamoe.mirai.alsoLogin
 import net.mamoe.mirai.console.MiraiConsole
 import net.mamoe.mirai.console.command.CommandManager.INSTANCE.register
 import net.mamoe.mirai.console.internal.command.CommandManagerImpl
 import net.mamoe.mirai.console.internal.command.CommandManagerImpl.allRegisteredCommands
+import net.mamoe.mirai.console.internal.command.qualifiedNameOrTip
+import net.mamoe.mirai.console.util.BotManager.INSTANCE.addManager
+import net.mamoe.mirai.console.util.BotManager.INSTANCE.managers
+import net.mamoe.mirai.console.util.BotManager.INSTANCE.removeManager
 import net.mamoe.mirai.console.util.ConsoleExperimentalAPI
 import net.mamoe.mirai.console.util.ConsoleInternalAPI
+import net.mamoe.mirai.contact.*
+import net.mamoe.mirai.getFriendOrNull
 import net.mamoe.mirai.message.nextMessageOrNull
 import net.mamoe.mirai.utils.secondsToMillis
 import kotlin.concurrent.thread
@@ -51,9 +58,36 @@ public object BuiltInCommands {
         }
     }
 
+    public object Managers : CompositeCommand(
+        ConsoleCommandOwner, "managers",
+        description = "Manage the managers for each bot",
+        permission = CommandPermission.Console or CommandPermission.Manager
+    ), BuiltInCommand {
+        @Permission(CommandPermission.Console::class)
+        @SubCommand
+        public suspend fun CommandSender.add(target: User) {
+            target.bot.addManager(target.id)
+            sendMessage("已成功添加 ${target.render()} 为 ${target.bot.render()} 的管理员")
+        }
+
+        @Permission(CommandPermission.Console::class)
+        @SubCommand
+        public suspend fun CommandSender.remove(target: User) {
+            target.bot.removeManager(target.id)
+            sendMessage("已成功取消 ${target.render()} 对 ${target.bot.render()} 的管理员权限")
+        }
+
+        @SubCommand
+        public suspend fun CommandSender.list(bot: Bot) {
+            sendMessage("$bot 的管理员列表:\n" + bot.managers.joinToString("\n") {
+                bot.getFriendOrNull(it)?.render() ?: it.toString()
+            })
+        }
+    }
+
     public object Help : SimpleCommand(
         ConsoleCommandOwner, "help",
-        description = "Gets help about the console."
+        description = "Command list"
     ), BuiltInCommand {
         @Handler
         public suspend fun CommandSender.handle() {
@@ -63,15 +97,16 @@ public object BuiltInCommands {
         }
     }
 
+    init {
+        Runtime.getRuntime().addShutdownHook(thread(false) {
+            MiraiConsole.cancel()
+        })
+    }
+
     public object Stop : SimpleCommand(
         ConsoleCommandOwner, "stop", "shutdown", "exit",
         description = "Stop the whole world."
     ), BuiltInCommand {
-        init {
-            Runtime.getRuntime().addShutdownHook(thread(false) {
-                MiraiConsole.cancel()
-            })
-        }
 
         private val closingLock = Mutex()
 
@@ -122,6 +157,16 @@ public object BuiltInCommands {
     }
 }
 
+internal fun ContactOrBot.render(): String {
+    return when (this) {
+        is Bot -> "Bot $nick($id)"
+        is Group -> "Group $name($id)"
+        is Friend -> "Friend $nick($id)"
+        is Member -> "Friend $nameCardOrNick($id)"
+        else -> error("Illegal type for ContactOrBot: ${this::class.qualifiedNameOrTip}")
+    }
+}
+
 /*
 
 /**
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/AutoSavePluginData.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/AutoSavePluginData.kt
index 383bd7164..6a85777d9 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/AutoSavePluginData.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/AutoSavePluginData.kt
@@ -16,6 +16,7 @@ import kotlinx.coroutines.*
 import net.mamoe.mirai.console.internal.plugin.updateWhen
 import net.mamoe.mirai.console.util.ConsoleExperimentalAPI
 import net.mamoe.mirai.console.util.ConsoleInternalAPI
+import net.mamoe.mirai.utils.DefaultLogger
 import net.mamoe.mirai.utils.currentTimeMillis
 
 /**
@@ -39,7 +40,11 @@ public open class AutoSavePluginData private constructor(
 
     override fun onStored(owner: PluginDataHolder, storage: PluginDataStorage) {
         check(owner is AutoSavePluginDataHolder) { "owner must be AutoSavePluginDataHolder for AutoSavePluginData" }
-        check(!this::storage_.isInitialized) { "storage is already initialized" }
+
+        if (this::storage_.isInitialized) {
+            check(storage == this.storage_) { "AutoSavePluginData is already initialized with one storage and cannot be reinitialized with another." }
+        }
+
         this.storage_ = storage
         this.owner_ = owner
 
@@ -90,10 +95,16 @@ public open class AutoSavePluginData private constructor(
     @Suppress("RedundantVisibilityModifier")
     @ConsoleInternalAPI
     public final override fun onValueChanged(value: Value<*>) {
+        debuggingLogger1.error("onValueChanged: $value")
         if (::owner_.isInitialized) {
             lastAutoSaveJob_ = owner_.launch(block = updaterBlock)
         }
     }
 
-    private fun doSave() = storage_.store(owner_, this)
-}
\ No newline at end of file
+    private fun doSave() {
+        debuggingLogger1.error("doSave: ${this::class.qualifiedName}")
+        storage_.store(owner_, this)
+    }
+}
+
+internal val debuggingLogger1 = DefaultLogger("debug")
\ No newline at end of file
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginData.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginData.kt
index b4e70316d..7f3970128 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginData.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginData.kt
@@ -76,7 +76,7 @@ import kotlin.reflect.full.findAnnotation
  * @see JvmPlugin.reloadPluginData 通过 [JvmPlugin] 获取指定 [PluginData] 实例.
  * @see PluginDataStorage [PluginData] 存储仓库
  */
-public interface PluginData {
+public interface PluginData : PluginDataExtensions {
     /**
      * 添加了追踪的 [ValueNode] 列表 (即使用 `by value()` 委托的属性), 即通过 `by value` 初始化的属性列表.
      *
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginDataExtensions.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginDataExtensions.kt
new file mode 100644
index 000000000..5b0120859
--- /dev/null
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/PluginDataExtensions.kt
@@ -0,0 +1,86 @@
+package net.mamoe.mirai.console.data
+
+import net.mamoe.mirai.console.internal.data.CompositeMapValueImpl
+import net.mamoe.mirai.console.internal.data.castOrInternalError
+import net.mamoe.mirai.console.internal.data.createCompositeMapValueImpl
+
+@Suppress("INAPPLICABLE_JVM_NAME", "UNCHECKED_CAST")
+public interface PluginDataExtensions {
+
+    @JvmName("withDefaultImmutable")
+    public fun <V, K> SerializerAwareValue<Map<K, V>>.withDefault(defaultValueComputer: (K) -> V): SerializerAwareValue<Map<K, V>> {
+        return (this as SerializerAwareValue<MutableMap<K, V>>).withDefault(defaultValueComputer) as SerializerAwareValue<Map<K, V>>
+    }
+
+    @JvmName("withDefaultImmutableMap")
+    public fun <M : Map<K, V>, V : Map<*, *>, K> SerializerAwareValue<M>.withEmptyDefault(): SerializerAwareValue<M> {
+        return this.withDefault { LinkedHashMap<Any?, Any?>() as V }
+    }
+
+    @JvmName("withDefaultImmutableSet")
+    public fun <M : Map<K, V>, V : Set<*>, K> SerializerAwareValue<M>.withEmptyDefault(): SerializerAwareValue<M> {
+        return this.withDefault { LinkedHashSet<Any?>() as V }
+    }
+
+    @JvmName("withDefaultImmutableList")
+    public fun <M : Map<K, V>, V : List<*>, K> SerializerAwareValue<M>.withEmptyDefault(): SerializerAwareValue<M> {
+        return this.withDefault { ArrayList<Any?>() as V }
+    }
+
+    public fun <M : Map<K, V>, V, K> SerializerAwareValue<M>.withDefault(defaultValueComputer: (K) -> V): SerializerAwareValue<M> {
+        val pluginData = this@PluginDataExtensions.castOrInternalError<PluginData>()
+
+
+        val origin = (this as SerializableValue<M>).delegate.castOrInternalError<CompositeMapValueImpl<K, V>>()
+
+        return SerializableValue(
+            object : CompositeMapValue<K, V> {
+                private val instance = object : MutableMap<K, V> {
+                    override val size: Int get() = origin.value.size
+                    override fun containsKey(key: K): Boolean = origin.value.containsKey(key)
+                    override fun containsValue(value: V): Boolean = origin.value.containsValue(value)
+                    override fun isEmpty(): Boolean = origin.value.isEmpty()
+                    override val entries: MutableSet<MutableMap.MutableEntry<K, V>> get() = origin.value.entries as MutableSet<MutableMap.MutableEntry<K, V>>
+                    override val keys: MutableSet<K> get() = origin.value.keys as MutableSet<K>
+                    override val values: MutableCollection<V> get() = origin.value.values as MutableCollection<V>
+                    override fun clear() = (origin.value as MutableMap<K, V>).clear()
+                    override fun putAll(from: Map<out K, V>) = (origin.value as MutableMap<K, V>).putAll(from)
+                    override fun remove(key: K): V? = (origin.value as MutableMap<K, V>).remove(key)
+                    override fun put(key: K, value: V): V? = (origin.value as MutableMap<K, V>).put(key, value)
+
+                    override fun get(key: K): V? {
+                        // the only difference
+                        val result = origin.value[key]
+                        if (result != null) {
+                            return result
+                        }
+                        put(key, defaultValueComputer(key))
+                        return origin.value[key]
+                    }
+                }
+
+                override var value: Map<K, V>
+                    get() = instance
+                    set(value) {
+                        origin.value = value
+                    }
+            } as Value<M>,
+            this.serializer
+        )
+        return pluginData.createCompositeMapValueImpl(
+            kToValue = origin.kToValue,
+            vToValue = origin.vToValue,
+            applyToShadowedMap = { theMap ->
+                object : MutableMap<K, V> by theMap {
+                    override fun get(key: K): V? {
+                        val result = theMap[key]
+                        if (result != null) return result
+                        theMap[key] = defaultValueComputer(key)
+                        return theMap[key]
+                    }
+                }
+            }
+        ).let { SerializableValue(it, serializer) } as SerializerAwareValue<M>
+    }
+
+}
\ No newline at end of file
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/Value.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/Value.kt
index 392214c16..9719df5a9 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/Value.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/data/Value.kt
@@ -40,7 +40,7 @@ public interface Value<T> {
  * 可被序列化的 [Value].
  */
 public class SerializableValue<T>(
-    private val delegate: Value<T>,
+    @JvmField internal val delegate: Value<T>,
     /**
      * 用于更新和保存 [delegate] 的序列化器
      */
@@ -56,7 +56,9 @@ public class SerializableValue<T>(
         ): SerializableValue<T> {
             return SerializableValue(
                 this,
-                serializer.map(serializer = { this.value }, deserializer = { this.setValueBySerializer(it) })
+                serializer.map(serializer = {
+                    this.value
+                }, deserializer = { this.setValueBySerializer(it) })
             )
         }
     }
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt
index a1540dcfa..362304152 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt
@@ -15,7 +15,7 @@ import com.vdurmont.semver4j.Semver
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Job
 import net.mamoe.mirai.Bot
-import net.mamoe.mirai.console.IllegalMiraiConsoleImplementationError
+import net.mamoe.mirai.console.MalformedMiraiConsoleImplementationError
 import net.mamoe.mirai.console.MiraiConsole
 import net.mamoe.mirai.console.MiraiConsoleFrontEndDescription
 import net.mamoe.mirai.console.MiraiConsoleImplementation
@@ -26,7 +26,7 @@ import net.mamoe.mirai.console.data.PluginDataStorage
 import net.mamoe.mirai.console.internal.command.CommandManagerImpl
 import net.mamoe.mirai.console.internal.plugin.CuiPluginCenter
 import net.mamoe.mirai.console.internal.plugin.PluginManagerImpl
-import net.mamoe.mirai.console.internal.util.ConsoleBuiltInPluginDataStorage
+import net.mamoe.mirai.console.internal.util.ConsoleDataScope
 import net.mamoe.mirai.console.plugin.PluginLoader
 import net.mamoe.mirai.console.plugin.PluginManager
 import net.mamoe.mirai.console.plugin.center.PluginCenter
@@ -62,6 +62,7 @@ internal object MiraiConsoleImplementationBridge : CoroutineScope, MiraiConsoleI
     override val dataStorageForJarPluginLoader: PluginDataStorage by instance::dataStorageForJarPluginLoader
     override val configStorageForJarPluginLoader: PluginDataStorage by instance::configStorageForJarPluginLoader
     override val dataStorageForBuiltIns: PluginDataStorage by instance::dataStorageForBuiltIns
+    override val configStorageForBuiltIns: PluginDataStorage by instance::configStorageForBuiltIns
     override val consoleInput: ConsoleInput by instance::consoleInput
 
     override fun createLoginSolver(requesterBot: Long, configuration: BotConfiguration): LoginSolver =
@@ -83,15 +84,18 @@ internal object MiraiConsoleImplementationBridge : CoroutineScope, MiraiConsoleI
         mainLogger.info { frontEndDescription.render() }
 
         if (coroutineContext[Job] == null) {
-            throw IllegalMiraiConsoleImplementationError("The coroutineContext given to MiraiConsole must have a Job in it.")
+            throw MalformedMiraiConsoleImplementationError("The coroutineContext given to MiraiConsole must have a Job in it.")
         }
 
         MiraiConsole.job.invokeOnCompletion {
             Bot.botInstances.forEach { kotlin.runCatching { it.close() }.exceptionOrNull()?.let(mainLogger::error) }
         }
 
+        mainLogger.info { "Reloading configurations..." }
+        ConsoleDataScope.reloadAll()
+
         BuiltInCommands.registerAll()
-        mainLogger.info { "Preparing built-in commands: ${BuiltInCommands.all.joinToString { it.primaryName }}" }
+        mainLogger.info { "Prepared built-in commands: ${BuiltInCommands.all.joinToString { it.primaryName }}" }
         CommandManagerImpl.commandListener // start
 
         mainLogger.info { "Loading plugins..." }
@@ -99,7 +103,6 @@ internal object MiraiConsoleImplementationBridge : CoroutineScope, MiraiConsoleI
         mainLogger.info { "${PluginManager.plugins.size} plugin(s) loaded." }
         mainLogger.info { "mirai-console started successfully." }
 
-        ConsoleBuiltInPluginDataStorage // init
         // Only for initialize
     }
 }
\ No newline at end of file
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CompositeCommandInternal.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CompositeCommandInternal.kt
index f592523e7..11fa903e2 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CompositeCommandInternal.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/CompositeCommandInternal.kt
@@ -130,11 +130,11 @@ internal abstract class AbstractReflectionCommand @JvmOverloads constructor(
             removeSubName: Boolean
         ) {
             val args = parseArgs(sender, argsWithSubCommandNameNotRemoved, if (removeSubName) names.size else 0)
-            if (args == null || !onCommand(
-                    sender,
-                    args
-                )
-            ) {
+            if (!this.permission.testPermission(sender)) {
+                sender.sendMessage(usage) // TODO: 2020/8/26 #127
+                return
+            }
+            if (args == null || !onCommand(sender, args)) {
                 sender.sendMessage(usage)
             }
         }
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/CompositeValueImpl.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/CompositeValueImpl.kt
index 69fc19338..10fcfea07 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/CompositeValueImpl.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/CompositeValueImpl.kt
@@ -110,9 +110,12 @@ internal abstract class CompositeListValueImpl<T>(
 // workaround to a type inference bug
 internal fun <K, V> PluginData.createCompositeMapValueImpl(
     kToValue: (K) -> Value<K>,
-    vToValue: (V) -> Value<V>
+    vToValue: (V) -> Value<V>,
+    valueToK: (Value<K>) -> K = Value<K>::value,
+    valueToV: (Value<V>) -> V = Value<V>::value,
+    applyToShadowedMap: ((MutableMap<K, V>) -> (MutableMap<K, V>))? = null
 ): CompositeMapValueImpl<K, V> {
-    return object : CompositeMapValueImpl<K, V>(kToValue, vToValue) {
+    return object : CompositeMapValueImpl<K, V>(kToValue, vToValue, valueToK, valueToV, applyToShadowedMap) {
         override fun onChanged() = this@createCompositeMapValueImpl.onValueChanged(this)
     }
 }
@@ -120,13 +123,20 @@ internal fun <K, V> PluginData.createCompositeMapValueImpl(
 // TODO: 2020/6/24 在一个 Value 被删除后停止追踪其更新.
 
 internal abstract class CompositeMapValueImpl<K, V>(
-    kToValue: (K) -> Value<K>, // should override onChanged
-    vToValue: (V) -> Value<V> // should override onChanged
+    @JvmField internal val kToValue: (K) -> Value<K>, // should override onChanged
+    @JvmField internal val vToValue: (V) -> Value<V>, // should override onChanged
+    @JvmField internal val valueToK: (Value<K>) -> K = Value<K>::value,
+    @JvmField internal val valueToV: (Value<V>) -> V = Value<V>::value,
+    applyToShadowedMap: ((MutableMap<K, V>) -> (MutableMap<K, V>))? = null
 ) : CompositeMapValue<K, V>, AbstractValueImpl<Map<K, V>>() {
-    private val internalList: MutableMap<Value<K>, Value<V>> = mutableMapOf()
+    @JvmField
+    internal val internalList: MutableMap<Value<K>, Value<V>> = mutableMapOf()
 
     private var _value: MutableMap<K, V> =
-        internalList.shadowMap({ it.value }, kToValue, { it.value }, vToValue).observable { onChanged() }
+        internalList.shadowMap(valueToK, kToValue, valueToV, vToValue).let {
+            applyToShadowedMap?.invoke(it) ?: it
+        }.observable { onChanged() }
+
     override var value: Map<K, V>
         get() = _value
         set(v) {
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/collectionUtil.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/collectionUtil.kt
index 1e81e2303..0218f3a3e 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/collectionUtil.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/collectionUtil.kt
@@ -18,73 +18,94 @@ import kotlin.reflect.KClass
 
 // TODO: 2020/6/24 优化性能: 引入一个 comparator 之类来替代将 Int 包装为 Value<Int> 后进行 containsKey 比较的方法
 
-internal inline fun <K, V, KR, VR> MutableMap<K, V>.shadowMap(
-    crossinline kTransform: (K) -> KR,
-    crossinline kTransformBack: (KR) -> K,
-    crossinline vTransform: (V) -> VR,
-    crossinline vTransformBack: (VR) -> V
-): MutableMap<KR, VR> {
-    return object : MutableMap<KR, VR> {
-        override val size: Int get() = this@shadowMap.size
-        override fun containsKey(key: KR): Boolean = this@shadowMap.containsKey(key.let(kTransformBack))
-        override fun containsValue(value: VR): Boolean = this@shadowMap.containsValue(value.let(vTransformBack))
-        override fun get(key: KR): VR? = this@shadowMap[key.let(kTransformBack)]?.let(vTransform)
-        override fun isEmpty(): Boolean = this@shadowMap.isEmpty()
 
-        override val entries: MutableSet<MutableMap.MutableEntry<KR, VR>>
-            get() = this@shadowMap.entries.shadowMap(
-                transform = { entry: MutableMap.MutableEntry<K, V> ->
-                    object : MutableMap.MutableEntry<KR, VR> {
-                        override val key: KR get() = entry.key.let(kTransform)
-                        override val value: VR get() = entry.value.let(vTransform)
-                        override fun setValue(newValue: VR): VR =
-                            entry.setValue(newValue.let(vTransformBack)).let(vTransform)
+internal open class ShadowMap<K, V, KR, VR>(
+    private val originMap: MutableMap<K, V>,
+    private val kTransform: (K) -> KR,
+    private val kTransformBack: (KR) -> K,
+    private val vTransform: (V) -> VR,
+    private val vTransformBack: (VR) -> V
+) : MutableMap<KR, VR> {
+    override val size: Int get() = originMap.size
+    override fun containsKey(key: KR): Boolean = originMap.containsKey(key.let(kTransformBack))
+    override fun containsValue(value: VR): Boolean = originMap.containsValue(value.let(vTransformBack))
+    override fun get(key: KR): VR? = originMap[key.let(kTransformBack)]?.let(vTransform)
+    override fun isEmpty(): Boolean = originMap.isEmpty()
 
-                        override fun hashCode(): Int = 17 * 31 + (key?.hashCode() ?: 0) + (value?.hashCode() ?: 0)
-                        override fun toString(): String = "$key=$value"
-                        override fun equals(other: Any?): Boolean {
-                            if (other == null || other !is Map.Entry<*, *>) return false
-                            return other.key == key && other.value == value
-                        }
-                    }
-                } as ((MutableMap.MutableEntry<K, V>) -> MutableMap.MutableEntry<KR, VR>), // type inference bug
-                transformBack = { entry ->
-                    object : MutableMap.MutableEntry<K, V> {
-                        override val key: K get() = entry.key.let(kTransformBack)
-                        override val value: V get() = entry.value.let(vTransformBack)
-                        override fun setValue(newValue: V): V =
-                            entry.setValue(newValue.let(vTransform)).let(vTransformBack)
+    override val entries: MutableSet<MutableMap.MutableEntry<KR, VR>>
+        get() = originMap.entries.shadowMap(
+            transform = { entry: MutableMap.MutableEntry<K, V> ->
+                object : MutableMap.MutableEntry<KR, VR> {
+                    override val key: KR get() = entry.key.let(kTransform)
+                    override val value: VR get() = entry.value.let(vTransform)
+                    override fun setValue(newValue: VR): VR =
+                        entry.setValue(newValue.let(vTransformBack)).let(vTransform)
 
-                        override fun hashCode(): Int = 17 * 31 + (key?.hashCode() ?: 0) + (value?.hashCode() ?: 0)
-                        override fun toString(): String = "$key=$value"
-                        override fun equals(other: Any?): Boolean {
-                            if (other == null || other !is Map.Entry<*, *>) return false
-                            return other.key == key && other.value == value
-                        }
+                    override fun hashCode(): Int = 17 * 31 + (key?.hashCode() ?: 0) + (value?.hashCode() ?: 0)
+                    override fun toString(): String = "$key=$value"
+                    override fun equals(other: Any?): Boolean {
+                        if (other == null || other !is Map.Entry<*, *>) return false
+                        return other.key == key && other.value == value
                     }
                 }
-            )
-        override val keys: MutableSet<KR>
-            get() = this@shadowMap.keys.shadowMap(kTransform, kTransformBack)
-        override val values: MutableCollection<VR>
-            get() = this@shadowMap.values.shadowMap(vTransform, vTransformBack)
+            } as ((MutableMap.MutableEntry<K, V>) -> MutableMap.MutableEntry<KR, VR>), // type inference bug
+            transformBack = { entry ->
+                object : MutableMap.MutableEntry<K, V> {
+                    override val key: K get() = entry.key.let(kTransformBack)
+                    override val value: V get() = entry.value.let(vTransformBack)
+                    override fun setValue(newValue: V): V =
+                        entry.setValue(newValue.let(vTransform)).let(vTransformBack)
 
-        override fun clear() = this@shadowMap.clear()
-        override fun put(key: KR, value: VR): VR? =
-            this@shadowMap.put(key.let(kTransformBack), value.let(vTransformBack))?.let(vTransform)
-
-        override fun putAll(from: Map<out KR, VR>) {
-            from.forEach { (kr, vr) ->
-                this@shadowMap[kr.let(kTransformBack)] = vr.let(vTransformBack)
+                    override fun hashCode(): Int = 17 * 31 + (key?.hashCode() ?: 0) + (value?.hashCode() ?: 0)
+                    override fun toString(): String = "$key=$value"
+                    override fun equals(other: Any?): Boolean {
+                        if (other == null || other !is Map.Entry<*, *>) return false
+                        return other.key == key && other.value == value
+                    }
+                }
             }
-        }
+        )
+    override val keys: MutableSet<KR>
+        get() = originMap.keys.shadowMap(kTransform, kTransformBack)
+    override val values: MutableCollection<VR>
+        get() = originMap.values.shadowMap(vTransform, vTransformBack)
 
-        override fun remove(key: KR): VR? = this@shadowMap.remove(key.let(kTransformBack))?.let(vTransform)
-        override fun toString(): String = this@shadowMap.toString()
-        override fun hashCode(): Int = this@shadowMap.hashCode()
+    override fun clear() = originMap.clear()
+    override fun put(key: KR, value: VR): VR? =
+        originMap.put(key.let(kTransformBack), value.let(vTransformBack))?.let(vTransform)
+
+    override fun putAll(from: Map<out KR, VR>) {
+        from.forEach { (kr, vr) ->
+            originMap[kr.let(kTransformBack)] = vr.let(vTransformBack)
+        }
+    }
+
+    override fun remove(key: KR): VR? = originMap.remove(key.let(kTransformBack))?.let(vTransform)
+    override fun toString(): String = originMap.toString()
+    override fun hashCode(): Int = originMap.hashCode()
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as ShadowMap<*, *, *, *>
+
+        if (originMap != other.originMap) return false
+        if (kTransform != other.kTransform) return false
+        if (kTransformBack != other.kTransformBack) return false
+        if (vTransform != other.vTransform) return false
+        if (vTransformBack != other.vTransformBack) return false
+
+        return true
     }
 }
 
+internal fun <K, V, KR, VR> MutableMap<K, V>.shadowMap(
+    kTransform: (K) -> KR,
+    kTransformBack: (KR) -> K,
+    vTransform: (V) -> VR,
+    vTransformBack: (VR) -> V
+): MutableMap<KR, VR> = ShadowMap(this, kTransform, kTransformBack, vTransform, vTransformBack)
+
 internal inline fun <E, R> MutableCollection<E>.shadowMap(
     crossinline transform: (E) -> R,
     crossinline transformBack: (R) -> E
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/valueFromKTypeImpl.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/valueFromKTypeImpl.kt
index 3d601626a..72f5bd28d 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/valueFromKTypeImpl.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/data/valueFromKTypeImpl.kt
@@ -17,6 +17,7 @@ import net.mamoe.mirai.console.data.SerializableValue.Companion.serializableValu
 import net.mamoe.mirai.console.data.SerializerAwareValue
 import net.mamoe.mirai.console.data.valueFromKType
 import net.mamoe.mirai.console.internal.command.qualifiedNameOrTip
+import kotlin.contracts.contract
 import kotlin.reflect.KClass
 import kotlin.reflect.KType
 
@@ -148,4 +149,17 @@ internal fun KClass<*>.isPrimitiveOrBuiltInSerializableValue(): Boolean {
 
 @PublishedApi
 @Suppress("UNCHECKED_CAST")
-internal inline fun <R> Any.cast(): R = this as R
+internal inline fun <reified R> Any.cast(): R {
+    contract {
+        returns() implies (this@cast is R)
+    }
+    return this as R
+}
+
+@Suppress("UNCHECKED_CAST")
+internal inline fun <reified R> Any.castOrInternalError(): R {
+    contract {
+        returns() implies (this@castOrInternalError is R)
+    }
+    return (this as? R) ?: error("Internal error: ${this::class} cannot be casted to ${R::class}")
+}
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/util/BotManagerImpl.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/util/BotManagerImpl.kt
index 2e76603bb..6c4515c2b 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/util/BotManagerImpl.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/util/BotManagerImpl.kt
@@ -42,22 +42,47 @@ internal object BotManagerImpl : BotManager {
     }
 }
 
-internal object ManagersConfig : AutoSavePluginData() {
-    private val managers: MutableMap<Long, MutableSet<Long>> by value()
-
-    internal operator fun get(bot: Bot): MutableSet<Long> = managers.getOrPut(bot.id, ::mutableSetOf)
+internal object ManagersConfig : AutoSavePluginConfig() {
+    private val managers by value<MutableMap<Long, MutableSet<Long>>>().withEmptyDefault()
+    internal operator fun get(bot: Bot): MutableSet<Long> = managers[bot.id]!!
 }
 
 
 internal fun CoroutineContext.overrideWithSupervisorJob(): CoroutineContext = this + SupervisorJob(this[Job])
 internal fun CoroutineScope.childScope(context: CoroutineContext = EmptyCoroutineContext): CoroutineScope =
-    CoroutineScope(this.coroutineContext.overrideWithSupervisorJob() + context)
+    CoroutineScope(this.childScopeContext(context))
+
+internal fun CoroutineScope.childScopeContext(context: CoroutineContext = EmptyCoroutineContext): CoroutineContext =
+    this.coroutineContext.overrideWithSupervisorJob() + context
+
+internal object ConsoleDataScope : CoroutineScope by MiraiConsole.childScope() {
+    private val data: Array<out PluginData> = arrayOf()
+    private val configs: Array<out PluginConfig> = arrayOf(ManagersConfig)
+
+    fun reloadAll() {
+        data.forEach { dt ->
+            ConsoleBuiltInPluginDataStorage.load(ConsoleBuiltInPluginDataHolder, dt)
+        }
+        configs.forEach { config ->
+            ConsoleBuiltInPluginConfigStorage.load(ConsoleBuiltInPluginConfigHolder, config)
+        }
+    }
+}
 
 internal object ConsoleBuiltInPluginDataHolder : AutoSavePluginDataHolder,
-    CoroutineScope by MiraiConsole.childScope() {
-    override val autoSaveIntervalMillis: LongRange = 30.minutesToMillis..60.minutesToMillis
+    CoroutineScope by ConsoleDataScope.childScope() {
+    override val autoSaveIntervalMillis: LongRange = 1.minutesToMillis..10.minutesToMillis
+    override val name: String get() = "ConsoleBuiltIns"
+}
+
+internal object ConsoleBuiltInPluginConfigHolder : AutoSavePluginDataHolder,
+    CoroutineScope by ConsoleDataScope.childScope() {
+    override val autoSaveIntervalMillis: LongRange = 1.minutesToMillis..10.minutesToMillis
     override val name: String get() = "ConsoleBuiltIns"
 }
 
 internal object ConsoleBuiltInPluginDataStorage :
-    PluginDataStorage by MiraiConsoleImplementationBridge.dataStorageForBuiltIns
\ No newline at end of file
+    PluginDataStorage by MiraiConsoleImplementationBridge.dataStorageForBuiltIns
+
+internal object ConsoleBuiltInPluginConfigStorage :
+    PluginDataStorage by MiraiConsoleImplementationBridge.configStorageForBuiltIns
\ No newline at end of file
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/AbstractJvmPlugin.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/AbstractJvmPlugin.kt
index 56499652e..77d8c016e 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/AbstractJvmPlugin.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/AbstractJvmPlugin.kt
@@ -12,7 +12,7 @@
 package net.mamoe.mirai.console.plugin.jvm
 
 import net.mamoe.mirai.console.internal.plugin.JvmPluginInternal
-import net.mamoe.mirai.utils.minutesToSeconds
+import net.mamoe.mirai.utils.minutesToMillis
 import net.mamoe.mirai.utils.secondsToMillis
 import kotlin.coroutines.CoroutineContext
 import kotlin.coroutines.EmptyCoroutineContext
@@ -28,5 +28,5 @@ public abstract class AbstractJvmPlugin @JvmOverloads constructor(
 ) : JvmPlugin, JvmPluginInternal(parentCoroutineContext) {
     public final override val name: String get() = this.description.name
 
-    public override val autoSaveIntervalMillis: LongRange = 30.secondsToMillis..10.minutesToSeconds
+    public override val autoSaveIntervalMillis: LongRange = 30.secondsToMillis..10.minutesToMillis
 }
\ No newline at end of file
diff --git a/backend/mirai-console/src/test/kotlin/net/mamoe/mirai/console/TestMiraiConosle.kt b/backend/mirai-console/src/test/kotlin/net/mamoe/mirai/console/TestMiraiConosle.kt
index ad9cdb1c5..51cc0eadd 100644
--- a/backend/mirai-console/src/test/kotlin/net/mamoe/mirai/console/TestMiraiConosle.kt
+++ b/backend/mirai-console/src/test/kotlin/net/mamoe/mirai/console/TestMiraiConosle.kt
@@ -48,9 +48,11 @@ fun initTestEnvironment() {
         override val consoleCommandSender: ConsoleCommandSender = object : ConsoleCommandSender() {
             override suspend fun sendMessage(message: Message) = println(message)
         }
-        override val dataStorageForJarPluginLoader: PluginDataStorage get() = MemoryPluginDataStorage()
-        override val configStorageForJarPluginLoader: PluginDataStorage get() = TODO("Not yet implemented")
-        override val dataStorageForBuiltIns: PluginDataStorage get() = MemoryPluginDataStorage()
+        override val dataStorageForJarPluginLoader: PluginDataStorage = MemoryPluginDataStorage()
+        override val configStorageForJarPluginLoader: PluginDataStorage = MemoryPluginDataStorage()
+        override val dataStorageForBuiltIns: PluginDataStorage = MemoryPluginDataStorage()
+        override val configStorageForBuiltIns: PluginDataStorage = MemoryPluginDataStorage()
+
         override val consoleInput: ConsoleInput = object : ConsoleInput {
             override suspend fun requestInput(hint: String): String {
                 println(hint)
diff --git a/backend/mirai-console/src/test/kotlin/net/mamoe/mirai/console/data/SettingTest.kt b/backend/mirai-console/src/test/kotlin/net/mamoe/mirai/console/data/SettingTest.kt
index 38362b70c..bdfaaf869 100644
--- a/backend/mirai-console/src/test/kotlin/net/mamoe/mirai/console/data/SettingTest.kt
+++ b/backend/mirai-console/src/test/kotlin/net/mamoe/mirai/console/data/SettingTest.kt
@@ -10,7 +10,6 @@
 package net.mamoe.mirai.console.data
 
 import kotlinx.serialization.json.Json
-import net.mamoe.mirai.console.data.AutoSavePluginDataHolder.Companion.createPluginData
 import net.mamoe.mirai.console.plugin.jvm.KotlinPlugin
 import net.mamoe.mirai.console.util.ConsoleInternalAPI
 import org.junit.jupiter.api.Test
@@ -22,7 +21,7 @@ internal class PluginDataTest {
 
     object MyPlugin : KotlinPlugin()
 
-    class MyPluginData : PluginData by MyPlugin.createPluginData() {
+    class MyPluginData : AutoSavePluginData() {
         var int by value(1)
         val map: MutableMap<String, String> by value()
         val map2: MutableMap<String, MutableMap<String, String>> by value()
diff --git a/frontend/mirai-console-pure/src/main/kotlin/net/mamoe/mirai/console/pure/MiraiConsoleImplementationPure.kt b/frontend/mirai-console-pure/src/main/kotlin/net/mamoe/mirai/console/pure/MiraiConsoleImplementationPure.kt
index 4a2186cde..fc0b69e7a 100644
--- a/frontend/mirai-console-pure/src/main/kotlin/net/mamoe/mirai/console/pure/MiraiConsoleImplementationPure.kt
+++ b/frontend/mirai-console-pure/src/main/kotlin/net/mamoe/mirai/console/pure/MiraiConsoleImplementationPure.kt
@@ -58,7 +58,6 @@ import java.util.*
 /**
  * mirai-console-pure 后端实现
  *
- * @see MiraiConsoleFrontEndPure 前端实现
  * @see MiraiConsolePureLoader CLI 入口点
  */
 internal class MiraiConsoleImplementationPure
@@ -71,7 +70,8 @@ internal class MiraiConsoleImplementationPure
     override val consoleCommandSender: ConsoleCommandSender = ConsoleCommandSenderImpl,
     override val dataStorageForJarPluginLoader: PluginDataStorage = MultiFilePluginDataStorage(rootPath.resolve("data")),
     override val dataStorageForBuiltIns: PluginDataStorage = MultiFilePluginDataStorage(rootPath.resolve("data")),
-    override val configStorageForJarPluginLoader: PluginDataStorage = MultiFilePluginDataStorage(rootPath.resolve("config"))
+    override val configStorageForJarPluginLoader: PluginDataStorage = MultiFilePluginDataStorage(rootPath.resolve("config")),
+    override val configStorageForBuiltIns: PluginDataStorage = MultiFilePluginDataStorage(rootPath.resolve("config"))
 ) : MiraiConsoleImplementation, CoroutineScope by CoroutineScope(SupervisorJob()) {
     override val mainLogger: MiraiLogger by lazy {
         MiraiConsole.newLogger("main")