diff --git a/src/main/java/dev/cosgy/textToSpeak/BotConfig.kt b/src/main/java/dev/cosgy/textToSpeak/BotConfig.kt
index 5bc22c6..f3bc5b1 100644
--- a/src/main/java/dev/cosgy/textToSpeak/BotConfig.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/BotConfig.kt
@@ -107,10 +107,10 @@ class BotConfig(private val prompt: Prompt) {
             if (ownerId <= 0) {
                 ownerId = try {
                     prompt.prompt("""
-            所有者のユーザーIDが設定されていない、または有効なIDではありません。
-            BOTの所有者のユーザーIDを入力してください。
-            所有者のユーザーID: 
-            """.trimIndent())!!.toLong()
+                        所有者のユーザーIDが設定されていない、または有効なIDではありません。
+                        BOTの所有者のユーザーIDを入力してください。
+                        所有者のユーザーID: 
+                    """.trimIndent())!!.toLong()
                 } catch (ex: NumberFormatException) {
                     0
                 } catch (ex: NullPointerException) {
@@ -118,10 +118,10 @@ class BotConfig(private val prompt: Prompt) {
                 }
                 if (ownerId <= 0) {
                     prompt.alert(Prompt.Level.ERROR, CONTEXT, """
-     無効なユーザーIDです！終了します。
+                        無効なユーザーIDです！終了します。
      
-     設定ファイルの場所: ${path!!.toAbsolutePath()}
-     """.trimIndent())
+                        設定ファイルの場所: ${path!!.toAbsolutePath()}
+                    """.trimIndent())
                     exitProcess(0)
                 } else {
                     write = true
@@ -131,9 +131,9 @@ class BotConfig(private val prompt: Prompt) {
                 val original = OtherUtil.loadResource(this, "/reference.conf")
                 val mod: String = original?.substring(original.indexOf(START_TOKEN) + START_TOKEN.length, original.indexOf(END_TOKEN))?.replace("BOT_TOKEN_HERE", token!!)?.replace("Botトークンをここに貼り付け", token!!)?.replace("0 // OWNER ID", ownerId.toString())?.replace("所有者IDをここに貼り付け", ownerId.toString())?.trim { it <= ' ' }
                         ?: """
-     token = $token
-     owner = $ownerId
-     """.trimIndent()
+                            token = $token
+                            owner = $ownerId
+                        """.trimIndent()
                 FileUtils.writeStringToFile(path!!.toFile(), mod, StandardCharsets.UTF_8)
             }
 
@@ -141,16 +141,16 @@ class BotConfig(private val prompt: Prompt) {
             isValid = true
         } catch (ex: ConfigException) {
             prompt.alert(Prompt.Level.ERROR, CONTEXT, """
-     $ex: ${ex.message}
+                $ex: ${ex.message}
      
-     設定ファイルの場所: ${path!!.toAbsolutePath()}
-     """.trimIndent())
+                設定ファイルの場所: ${path!!.toAbsolutePath()}
+            """.trimIndent())
         } catch (ex: IOException) {
             prompt.alert(Prompt.Level.ERROR, CONTEXT, """
-     $ex: ${ex.message}
+                $ex: ${ex.message}
      
-     設定ファイルの場所: ${path!!.toAbsolutePath()}
-     """.trimIndent())
+                設定ファイルの場所: ${path!!.toAbsolutePath()}
+            """.trimIndent())
         }
     }
 
diff --git a/src/main/java/dev/cosgy/textToSpeak/audio/VoiceCreation.kt b/src/main/java/dev/cosgy/textToSpeak/audio/VoiceCreation.kt
index 7dc4f93..ce53e62 100644
--- a/src/main/java/dev/cosgy/textToSpeak/audio/VoiceCreation.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/audio/VoiceCreation.kt
@@ -129,17 +129,17 @@ class VoiceCreation( // 各種設定の値を保持するためのフィール
         command.add("-x")
         command.add(dictionary)
         command.add("-m")
-        command.add(getVoiceFilePath(settings!!.voice))
+        command.add(getVoiceFilePath(settings!!.voiceSetting))
         command.add("-ow")
         command.add(fileName)
         command.add("-r")
-        command.add(settings.speed.toString())
+        command.add(settings.speedSetting.toString())
         command.add("-jf")
-        command.add(settings.intonation.toString())
+        command.add(settings.intonationSetting.toString())
         command.add("-a")
-        command.add(settings.voiceQualityA.toString())
+        command.add(settings.voiceQualityASetting.toString())
         command.add("-fm")
-        command.add(settings.voiceQualityFm.toString())
+        command.add(settings.voiceQualityFmSetting.toString())
         command.add(tmpFilePath)
         return command.toTypedArray()
     }
diff --git a/src/main/java/dev/cosgy/textToSpeak/commands/general/SetIntonationCmd.kt b/src/main/java/dev/cosgy/textToSpeak/commands/general/SetIntonationCmd.kt
index 2fe5e04..ec3f9e2 100644
--- a/src/main/java/dev/cosgy/textToSpeak/commands/general/SetIntonationCmd.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/commands/general/SetIntonationCmd.kt
@@ -42,7 +42,7 @@ class SetIntonationCmd(private val bot: Bot) : SlashCommand() {
         }
 
         val settings = bot.userSettingsManager.getSettings(event.user.idLong)
-        settings.setIntonation(bd.toFloat())
+        settings.intonationSetting = bd.toFloat()
         event.reply("F0系列内変動の重みを$bd に設定しました。").queue()
     }
 
@@ -64,7 +64,7 @@ class SetIntonationCmd(private val bot: Bot) : SlashCommand() {
         }
 
         val settings = bot.userSettingsManager.getSettings(event.author.idLong)
-        settings.setIntonation(bd.toFloat())
+        settings.intonationSetting = bd.toFloat()
         event.reply("F0系列内変動の重みを$bd に設定しました。")
     }
 }
diff --git a/src/main/java/dev/cosgy/textToSpeak/commands/general/SetSpeedCmd.kt b/src/main/java/dev/cosgy/textToSpeak/commands/general/SetSpeedCmd.kt
index b98b70d..42e2ef1 100644
--- a/src/main/java/dev/cosgy/textToSpeak/commands/general/SetSpeedCmd.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/commands/general/SetSpeedCmd.kt
@@ -48,7 +48,7 @@ class SetSpeedCmd(private val bot: Bot) : SlashCommand() {
             return
         }
         val settings = bot.userSettingsManager.getSettings(event.user.idLong)
-        settings.setSpeed(bd.toFloat())
+        settings.speedSetting = bd.toFloat()
         event.reply("速度を $bd に設定しました。").queue()
     }
 
@@ -73,7 +73,7 @@ class SetSpeedCmd(private val bot: Bot) : SlashCommand() {
             return
         }
         val settings = bot.userSettingsManager.getSettings(event.author.idLong)
-        settings.setSpeed(bd.toFloat())
+        settings.speedSetting = bd.toFloat()
         event.reply("速度を $bd に設定しました。")
     }
 
diff --git a/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceCmd.kt b/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceCmd.kt
index e17b8bb..9566752 100644
--- a/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceCmd.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceCmd.kt
@@ -51,11 +51,11 @@ class SetVoiceCmd(private var bot: Bot) : SlashCommand() {
             event.replyEmbeds(builder.build()).queue()
             return
         }
-        val viceName = event.getOption("name")!!.asString
-        if (isValidVoice(viceName)) {
+        val voiceName = event.getOption("name")!!.asString
+        if (isValidVoice(voiceName)) {
             val settings = bot.userSettingsManager.getSettings(event.user.idLong)
-            settings.setVoice(viceName)
-            event.reply("声データを`$viceName`に設定しました。").queue()
+            settings.voiceSetting = voiceName
+            event.reply("声データを`$voiceName`に設定しました。").queue()
         } else {
             event.reply("有効な声データを選択して下さい。").queue()
         }
@@ -74,7 +74,7 @@ class SetVoiceCmd(private var bot: Bot) : SlashCommand() {
         val args = event.args
         if (voices.contains(args)) {
             val settings = bot.userSettingsManager.getSettings(event.author.idLong)
-            settings.setVoice(args)
+            settings.voiceSetting = args
             event.reply("声データを`$args`に設定しました。")
         } else {
             event.reply("有効な声データを選択して下さい。")
diff --git a/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceQualityA.kt b/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceQualityA.kt
index fc1e128..8b77766 100644
--- a/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceQualityA.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceQualityA.kt
@@ -58,7 +58,7 @@ class SetVoiceQualityA(private var bot: Bot) : SlashCommand() {
             return
         }
         val settings = bot.userSettingsManager.getSettings(event.user.idLong)
-        settings.setVoiceQualityA(bd!!.toFloat())
+        settings.voiceQualityASetting = bd!!.toFloat()
         event.reply("オールパス値を" + bd + "に設定しました。").queue()
     }
 
@@ -67,7 +67,6 @@ class SetVoiceQualityA(private var bot: Bot) : SlashCommand() {
         var result: Boolean
         var bd: BigDecimal? = null
         try {
-            //value = Float.parseFloat(args);
             bd = BigDecimal(args)
             result = true
         } catch (e: NumberFormatException) {
@@ -80,13 +79,12 @@ class SetVoiceQualityA(private var bot: Bot) : SlashCommand() {
         val min = BigDecimal("0.0")
         val max = BigDecimal("1.0")
 
-        //if(!(0.1f <= value && value <= 1.0f)){
         if (!(min < bd && max > bd)) {
             event.reply("有効な数値を設定して下さい。0.1~1.0")
             return
         }
         val settings = bot.userSettingsManager.getSettings(event.author.idLong)
-        settings.setVoiceQualityA(bd!!.toFloat())
+        settings.voiceQualityASetting = bd!!.toFloat()
         event.reply("オールパス値を" + bd + "に設定しました。")
     }
 }
\ No newline at end of file
diff --git a/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceQualityFm.kt b/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceQualityFm.kt
index becd218..ea56495 100644
--- a/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceQualityFm.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/commands/general/SetVoiceQualityFm.kt
@@ -59,7 +59,7 @@ class SetVoiceQualityFm(private var bot: Bot) : SlashCommand() {
             return
         }
         val settings = bot.userSettingsManager.getSettings(event.user.idLong)
-        bd?.let { settings.setVoiceQualityFm(it.toFloat()) }
+        bd?.let { settings.voiceQualityFmSetting = it.toFloat() }
         event.reply("追加ハーフトーンを" + bd + "に設定しました。").queue()
     }
 
@@ -95,7 +95,7 @@ class SetVoiceQualityFm(private var bot: Bot) : SlashCommand() {
             return
         }
         val settings = bot.userSettingsManager.getSettings(event.author.idLong)
-        bd?.let { settings.setVoiceQualityFm(it.toFloat()) }
+        bd?.let { settings.voiceQualityFmSetting = it.toFloat() }
         event.reply("追加ハーフトーンを" + bd + "に設定しました。")
     }
 }
\ No newline at end of file
diff --git a/src/main/java/dev/cosgy/textToSpeak/commands/general/SettingsCmd.kt b/src/main/java/dev/cosgy/textToSpeak/commands/general/SettingsCmd.kt
index af05290..536b9df 100644
--- a/src/main/java/dev/cosgy/textToSpeak/commands/general/SettingsCmd.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/commands/general/SettingsCmd.kt
@@ -35,11 +35,11 @@ class SettingsCmd(private var bot: Bot) : SlashCommand() {
         val builder = EmbedBuilder()
                 .setColor(Color.orange)
                 .setTitle(event.user.name + "の設定")
-                .addField("声：", settings.voice, false)
-                .addField("読み上げ速度：", settings.speed.toString(), false)
-                .addField("F0系列内変動の重み：", settings.intonation.toString(), false)
-                .addField("オールパス値：", settings.voiceQualityA.toString(), false)
-                .addField("追加ハーフトーン：", settings.voiceQualityFm.toString(), false)
+                .addField("声：", settings.voiceSetting, false)
+                .addField("読み上げ速度：", settings.speedSetting.toString(), false)
+                .addField("F0系列内変動の重み：", settings.intonationSetting.toString(), false)
+                .addField("オールパス値：", settings.voiceQualityASetting.toString(), false)
+                .addField("追加ハーフトーン：", settings.voiceQualityFmSetting.toString(), false)
         event.replyEmbeds(builder.build()).queue()
     }
 
@@ -48,11 +48,11 @@ class SettingsCmd(private var bot: Bot) : SlashCommand() {
         val builder = EmbedBuilder()
                 .setColor(Color.orange)
                 .setTitle(event.author.name + "の設定")
-                .addField("声：", settings.voice, false)
-                .addField("速度：", settings.speed.toString(), false)
-                .addField("抑揚：", settings.intonation.toString(), false)
-                .addField("声質a：", settings.voiceQualityA.toString(), false)
-                .addField("声質fm：", settings.voiceQualityFm.toString(), false)
+                .addField("声：", settings.voiceSetting, false)
+                .addField("速度：", settings.speedSetting.toString(), false)
+                .addField("抑揚：", settings.intonationSetting.toString(), false)
+                .addField("声質a：", settings.voiceQualityASetting.toString(), false)
+                .addField("声質fm：", settings.voiceQualityFmSetting.toString(), false)
         event.reply(builder.build())
     }
 }
\ No newline at end of file
diff --git a/src/main/java/dev/cosgy/textToSpeak/entities/Prompt.kt b/src/main/java/dev/cosgy/textToSpeak/entities/Prompt.kt
index 3af73d1..ff7c6a8 100644
--- a/src/main/java/dev/cosgy/textToSpeak/entities/Prompt.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/entities/Prompt.kt
@@ -1,5 +1,5 @@
 //////////////////////////////////////////////////////////////////////////////////////////
-//  Copyright 2023 Cosgy Dev                                                             /
+//     Copyright 2023 Cosgy Dev                                                             /
 //                                                                                       /
 //     Licensed under the Apache License, Version 2.0 (the "License");                   /
 //     you may not use this file except in compliance with the License.                  /
diff --git a/src/main/java/dev/cosgy/textToSpeak/settings/UserSettings.kt b/src/main/java/dev/cosgy/textToSpeak/settings/UserSettings.kt
index 7580db4..9626744 100644
--- a/src/main/java/dev/cosgy/textToSpeak/settings/UserSettings.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/settings/UserSettings.kt
@@ -15,32 +15,47 @@
 //////////////////////////////////////////////////////////////////////////////////////////
 package dev.cosgy.textToSpeak.settings
 
-class UserSettings(private val manager: UserSettingsManager, // getter
-                   private val userId: Long, var voice: String, var speed: Float, var intonation: Float, var voiceQualityA: Float, var voiceQualityFm: Float) {
+class UserSettings(
+    private val manager: UserSettingsManager,
+    private val userId: Long,
+    private var voice: String,
+    private var speed: Float,
+    private var intonation: Float,
+    private var voiceQualityA: Float,
+    private var voiceQualityFm: Float
+) {
+    var voiceSetting: String
+        get() = voice
+        set(value) {
+            voice = value
+            manager.saveSetting(userId)
+        }
 
-    fun setVoice(voice: String) {
-        this.voice = voice
-        manager.saveSetting(userId)
-    }
+    var speedSetting: Float
+        get() = speed
+        set(value) {
+            speed = value
+            manager.saveSetting(userId)
+        }
 
-    fun setSpeed(speed:Float){
-        this.speed = speed
-        manager.saveSetting(userId)
-    }
+    var intonationSetting: Float
+        get() = intonation
+        set(value) {
+            intonation = value
+            manager.saveSetting(userId)
+        }
 
-    fun setIntonation(intonation: Float){
-        this.intonation = intonation
-        manager.saveSetting(userId)
-    }
+    var voiceQualityASetting: Float
+        get() = voiceQualityA
+        set(value) {
+            voiceQualityA = value
+            manager.saveSetting(userId)
+        }
 
-    fun setVoiceQualityA(voiceQualityA: Float){
-        this.voiceQualityA = voiceQualityA
-        manager.saveSetting(userId)
-    }
-
-    fun setVoiceQualityFm(voiceQualityFm: Float){
-        this.voiceQualityFm = voiceQualityFm
-        manager.saveSetting(userId)
-    }
-
-}
\ No newline at end of file
+    var voiceQualityFmSetting: Float
+        get() = voiceQualityFm
+        set(value) {
+            voiceQualityFm = value
+            manager.saveSetting(userId)
+        }
+}
diff --git a/src/main/java/dev/cosgy/textToSpeak/settings/UserSettingsManager.kt b/src/main/java/dev/cosgy/textToSpeak/settings/UserSettingsManager.kt
index 5e0ee0a..1d7526f 100644
--- a/src/main/java/dev/cosgy/textToSpeak/settings/UserSettingsManager.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/settings/UserSettingsManager.kt
@@ -68,11 +68,11 @@ class UserSettingsManager {
         try {
             connection!!.prepareStatement(sql).use { ps ->
                 ps.setLong(1, userId)
-                ps.setString(2, settings!!.voice)
-                ps.setFloat(3, settings.speed)
-                ps.setFloat(4, settings.intonation)
-                ps.setFloat(5, settings.voiceQualityA)
-                ps.setFloat(6, settings.voiceQualityFm)
+                ps.setString(2, settings!!.voiceSetting)
+                ps.setFloat(3, settings.speedSetting)
+                ps.setFloat(4, settings.intonationSetting)
+                ps.setFloat(5, settings.voiceQualityASetting)
+                ps.setFloat(6, settings.voiceQualityFmSetting)
                 logger.debug(ps.toString())
                 ps.executeUpdate()
             }
diff --git a/src/main/java/dev/cosgy/textToSpeak/utils/OtherUtil.kt b/src/main/java/dev/cosgy/textToSpeak/utils/OtherUtil.kt
index 52e00a8..31db718 100644
--- a/src/main/java/dev/cosgy/textToSpeak/utils/OtherUtil.kt
+++ b/src/main/java/dev/cosgy/textToSpeak/utils/OtherUtil.kt
@@ -62,7 +62,7 @@ object OtherUtil {
      */
     fun loadResource(clazz: Any, name: String?): String? {
         return try {
-            readString(clazz.javaClass.getResourceAsStream(name))
+            name?.let { clazz.javaClass.getResourceAsStream(it)?.let { readString(it) } }
         } catch (ex: Exception) {
             null
         }
@@ -121,8 +121,8 @@ object OtherUtil {
         return Activity.playing(game)
     }
 
-    fun makeNonEmpty(str: String?): String {
-        return if (str == null || str.isEmpty()) "\u200B" else str
+    private fun makeNonEmpty(str: String?): String {
+        return if (str.isNullOrEmpty()) "\u200B" else str
     }
 
     fun parseStatus(status: String?): OnlineStatus {