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 c3576ca47..c5988ece7 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
@@ -15,6 +15,7 @@ import kotlinx.io.charsets.Charset
 import net.mamoe.mirai.Bot
 import net.mamoe.mirai.console.MiraiConsole.INSTANCE
 import net.mamoe.mirai.console.command.ConsoleCommandOwner
+import net.mamoe.mirai.console.command.ConsoleCommandSender
 import net.mamoe.mirai.console.plugin.PluginLoader
 import net.mamoe.mirai.console.plugin.center.CuiPluginCenter
 import net.mamoe.mirai.console.plugin.center.PluginCenter
@@ -93,61 +94,42 @@ internal object MiraiConsoleBuildConstants { // auto-filled on build (task :mira
 internal object MiraiConsoleInternal : CoroutineScope, IMiraiConsole, MiraiConsole {
     override val pluginCenter: PluginCenter get() = CuiPluginCenter
 
-    private val instance: IMiraiConsole
-        get() = MiraiConsoleInitializer.instance
-
-    /**
-     * `mirai-console` build 号
-     *
-     * UTC+8 时间
-     */
-    override val buildDate: Date
-        get() = MiraiConsoleBuildConstants.buildDate
-
-    /**
-     * `mirai-console` 版本
-     */
+    private val instance: IMiraiConsole get() = MiraiConsoleInitializer.instance
+    override val buildDate: Date get() = MiraiConsoleBuildConstants.buildDate
     override val version: String get() = MiraiConsoleBuildConstants.version
-
-    /**
-     * Console 运行路径
-     */
     override val rootDir: File get() = instance.rootDir
-
-    /**
-     * Console 前端接口
-     */
     override val frontEnd: MiraiConsoleFrontEnd get() = instance.frontEnd
 
-    /**
-     * 与前端交互所使用的 Logger
-     */
     @MiraiExperimentalAPI
     override val mainLogger: MiraiLogger
         get() = instance.mainLogger
-
     override val coroutineContext: CoroutineContext get() = instance.coroutineContext
-
     override val builtInPluginLoaders: List<PluginLoader<*, *>> get() = instance.builtInPluginLoaders
-
-    override val consoleCommandOwner: ConsoleCommandOwner
-        get() = instance.consoleCommandOwner
+    override val consoleCommandOwner: ConsoleCommandOwner get() = instance.consoleCommandOwner
+    override val consoleCommandSender: ConsoleCommandSender get() = instance.consoleCommandSender
 
     init {
         DefaultLogger = { identity -> this.newLogger(identity) }
-        this.coroutineContext[Job]!!.invokeOnCompletion {
-            Bot.botInstances.forEach { kotlin.runCatching { it.close() }.exceptionOrNull()?.let(mainLogger::error) }
-        }
     }
 
     @MiraiExperimentalAPI
     override fun newLogger(identity: String?): MiraiLogger = frontEnd.loggerFor(identity)
 
     internal fun initialize() {
+        if (coroutineContext[Job] == null) {
+            throw IllegalMiraiConsoleImplementationError("The coroutineContext given to MiraiConsole must have a Job in it.")
+        }
+        this.coroutineContext[Job]!!.invokeOnCompletion {
+            Bot.botInstances.forEach { kotlin.runCatching { it.close() }.exceptionOrNull()?.let(mainLogger::error) }
+        }
         // Only for initialize
     }
 }
 
+class IllegalMiraiConsoleImplementationError(
+    override val message: String?
+) : Error()
+
 
 // 前端使用
 internal interface IMiraiConsole : CoroutineScope {
@@ -173,6 +155,9 @@ internal interface IMiraiConsole : CoroutineScope {
 
     @Suppress("WRONG_MODIFIER_CONTAINING_DECLARATION")
     internal val consoleCommandOwner: ConsoleCommandOwner
+
+    @Suppress("WRONG_MODIFIER_CONTAINING_DECLARATION")
+    internal val consoleCommandSender: ConsoleCommandSender
 }
 
 /**
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsoleFrontEnd.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsoleFrontEnd.kt
index 48043cb76..ec6d47082 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsoleFrontEnd.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsoleFrontEnd.kt
@@ -22,13 +22,6 @@ import net.mamoe.mirai.utils.MiraiLogger
 interface MiraiConsoleFrontEnd {
     fun loggerFor(identity: String?): MiraiLogger
 
-    /**
-     * 让 UI 层准备接受新增的一个BOT
-     */
-    fun prePushBot(
-        identity: Long
-    )
-
     /**
      * 让 UI 层接受一个新的bot
      * */
@@ -41,18 +34,8 @@ interface MiraiConsoleFrontEnd {
      */
     suspend fun requestInput(hint: String): String
 
-
-    /**
-     * 让 UI 层更新 bot 管理员的数据
-     */
-    fun pushBotAdminStatus(
-        identity: Long,
-        admins: List<Long>
-    )
-
     /**
      * 由 UI 层创建一个 [LoginSolver]
      */
     fun createLoginSolver(): LoginSolver
-
 }
\ No newline at end of file
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/JarPluginLoader.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/JarPluginLoader.kt
index 27633a20f..62332426c 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/JarPluginLoader.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/JarPluginLoader.kt
@@ -33,22 +33,20 @@ object JarPluginLoader : AbstractFilePluginLoader<JvmPlugin, JvmPluginDescriptio
     }
 
     @MiraiExperimentalAPI
-    val settingStorage: SettingStorage = TODO()
+    val settingStorage: SettingStorage by lazy { TODO() }
 
     override val coroutineContext: CoroutineContext by lazy {
         MiraiConsole.coroutineContext + SupervisorJob(
             MiraiConsole.coroutineContext[Job]
         ) + CoroutineExceptionHandler { _, throwable ->
             logger.error("Unhandled Jar plugin exception: ${throwable.message}", throwable)
-        }
+        }.also { init() }
     }
-    private val supervisor: Job = coroutineContext[Job]!!
 
-    private val classLoader: PluginsLoader =
-        PluginsLoader(this.javaClass.classLoader)
+    private val classLoader: PluginsLoader by lazy { PluginsLoader(this.javaClass.classLoader) }
 
-    init {
-        supervisor.invokeOnCompletion {
+    private fun init() { // delayed
+        coroutineContext[Job]!!.invokeOnCompletion {
             classLoader.clear()
         }
     }