diff --git a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/Bot.kt b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/Bot.kt
index 86c7832..b0283cc 100644
--- a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/Bot.kt
+++ b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/Bot.kt
@@ -68,8 +68,8 @@ open class Bot internal constructor(): IGroup {
 
     private fun getContext(message: Message): Context {
         val candidate = message.content.parsePrefixCommandAndArguments()
-        val context = Context(this, message, candidate?.first, candidate?.second)
-        context.command = getCommand(candidate?.second?.get(0))
+        val context = Context(this, message, candidate?.first, candidate?.second?.toMutableList())
+        context.command = getCommand(context.candidate?.removeAt(0))
         return context
     }
 
diff --git a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/BotHolder.kt b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/BotBuilder.kt
similarity index 69%
rename from core/src/main/kotlin/io/github/null2264/tsukumogami/core/BotHolder.kt
rename to core/src/main/kotlin/io/github/null2264/tsukumogami/core/BotBuilder.kt
index 33c755c..be9cbb6 100644
--- a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/BotHolder.kt
+++ b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/BotBuilder.kt
@@ -1,14 +1,12 @@
 package io.github.null2264.tsukumogami.core
 
-import dev.kord.core.Kord
 import io.github.null2264.tsukumogami.core.module.BotModule
 import kotlin.reflect.KFunction
 
-class BotHolder internal constructor(
+class BotBuilder internal constructor(
     val bot: Bot
 ) {
 
-    internal val prefixes = mutableListOf<String>()
     var token: String
         get() = bot.token
         set(value) {
@@ -24,9 +22,9 @@ class BotHolder internal constructor(
     }
 }
 
-fun bot(clazz: KFunction<Bot> = ::Bot, declaration: BotHolder.() -> Unit): Bot {
+fun bot(clazz: KFunction<Bot> = ::Bot, declaration: BotBuilder.() -> Unit): Bot {
     val bot = clazz.call()
-    val holder = BotHolder(bot)
+    val holder = BotBuilder(bot)
     declaration(holder)
     return holder.bot
 }
diff --git a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/Context.kt b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/Context.kt
index 9dfe7ed..dc849eb 100644
--- a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/Context.kt
+++ b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/Context.kt
@@ -16,8 +16,9 @@ class Context(
     /**
      * Potential command name and/or arguments
      */
-    val candidate: List<String>?,
+    val candidate: MutableList<String>?,
 ) {
+
     val author get() = message.author
 
     /**
diff --git a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Arguments.kt b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Arguments.kt
index 40984d3..e7adb40 100644
--- a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Arguments.kt
+++ b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Arguments.kt
@@ -3,6 +3,7 @@ package io.github.null2264.tsukumogami.core.commands
 import io.github.null2264.tsukumogami.core.commands.converters.Converter
 
 abstract class Arguments {
+
     val args = mutableListOf<Argument<*>>()
 
     fun <R : Any> args(
@@ -14,9 +15,18 @@ abstract class Arguments {
         return converter
     }
 
-    suspend fun parse(value: String) {
-        args.forEach { arg ->
-            arg.converter.parse(value)
+    suspend fun parse(values: List<String>?) {
+        val currentValues = values?.toMutableList()
+
+        run {
+            args.forEach { arg ->
+                val value = try {
+                    currentValues?.removeAt(0)
+                } catch (e: Exception) {
+                    null
+                } ?: return@run
+                arg.converter.parse(value)
+            }
         }
     }
 }
diff --git a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Command.kt b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Command.kt
index c770818..8dda97c 100644
--- a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Command.kt
+++ b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Command.kt
@@ -13,8 +13,7 @@ open class Command(
 
     open suspend fun invoke(context: Context) {
         val parsedArguments = arguments.call()
-        // TODO: Don't hardcode this
-        parsedArguments.parse(context.candidate?.get(1) ?: "test")
+        parsedArguments.parse(context.candidate)
         handler.invoke(context, parsedArguments)
     }
 }
diff --git a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Group.kt b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Group.kt
index 59bdc28..8ce1afe 100644
--- a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Group.kt
+++ b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/Group.kt
@@ -19,7 +19,8 @@ class Group(
     override val allCommands: MutableMap<String, Command> = mutableMapOf()
 
     override suspend fun invoke(context: Context) {
-        val command = allCommands["TODO"] ?: return
+        val command = allCommands[context.candidate?.get(0)] ?: return
+        context.candidate?.removeAt(0)
         context.command = command
         command.invoke(context)
     }
diff --git a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/IGroup.kt b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/IGroup.kt
index 42d8f5a..9f87233 100644
--- a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/IGroup.kt
+++ b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/IGroup.kt
@@ -40,6 +40,7 @@ interface IGroup {
         declaration: IGroup.() -> Unit,
     ) {
         val group = Group(name, alias, description)
+        declaration(group)
         addCommand(group)
     }
 }
diff --git a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/converters/Converter.kt b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/converters/Converter.kt
index cc9ed82..aa0fe6a 100644
--- a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/converters/Converter.kt
+++ b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/converters/Converter.kt
@@ -5,6 +5,7 @@ import io.github.null2264.tsukumogami.core.commands.Arguments
 import kotlin.reflect.KProperty
 
 abstract class Converter<OutputType: Any?> {
+
     lateinit var argumentObj: Argument<OutputType>
 
     abstract var parsed: OutputType
diff --git a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/converters/impl/StringConverter.kt b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/converters/impl/StringConverter.kt
index 723c52a..354817c 100644
--- a/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/converters/impl/StringConverter.kt
+++ b/core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/converters/impl/StringConverter.kt
@@ -3,7 +3,9 @@ package io.github.null2264.tsukumogami.core.commands.converters.impl
 import io.github.null2264.tsukumogami.core.commands.converters.Converter
 
 class StringConverter : Converter<String>() {
+
     override var parsed: String = ""
+
     override suspend fun parse(input: String): String {
         this.parsed = input
         return input