diff --git a/.poggit.yml b/.poggit.yml
index 79c60b2..85f0d34 100644
--- a/.poggit.yml
+++ b/.poggit.yml
@@ -6,11 +6,4 @@ projects:
     icon: "icon.png"
     lint:
       phpstan: false
-    libs:
-      - src: blugin/libcommand/libcommand
-        version: ^1.3.3
-      - src: blugin/libtranslator/libtranslator
-        version: ^1.0.5
-      - src: Blugin/virions/SingletonTrait
-        version: ^1.0.0
 ...
diff --git a/README.md b/README.md
index 21d4f16..900e252 100644
--- a/README.md
+++ b/README.md
@@ -5,13 +5,6 @@
 
 
 Set item&arrow's lifespan!
-
-## Command
-| name     | arguments                  | description             | permission        |
-| :------: | :------------------------: | :---------------------: | :---------------: |
-| lifespan |  <item / arrow> <lifespan> | Set entity's lifespan   | `OP` lifespan.cmd |
-  
-<br/><br/>
   
 ## Required API
 - PocketMine-MP : higher than [Build #501](https://jenkins.pmmp.io/job/PocketMine-MP/501)
diff --git a/plugin.yml b/plugin.yml
index 1f7f258..9c4e522 100644
--- a/plugin.yml
+++ b/plugin.yml
@@ -2,20 +2,7 @@
 name: Lifespan
 main: kim\present\lifespan\Main
 version: 3.0.0
-api: [3.0.0]
+api: [5.0.0]
 author: PresentKim
 description: Set item and arrow lifespan!
-load: STARTUP
-
-permissions:
-  lifespan.cmd:
-    description: Lifespan command
-    default: op
-    children:
-      lifespan.cmd.item:
-        description: Lifespan command - item
-        default: op
-      lifespan.cmd.arrow:
-        description: Lifespan command - arrow
-        default: op
 ...
diff --git a/resources/command/eng.yml b/resources/command/eng.yml
deleted file mode 100644
index 93299a5..0000000
--- a/resources/command/eng.yml
+++ /dev/null
@@ -1,28 +0,0 @@
-# Advanced configuration file for LifeSpan plugin
-# Some of these settings are safe, others can break your server if modified incorrectly
-# New settings/defaults won't appear automatically on this file when upgrading
-
-lifespan:
-  #Name of main command
-  #You can change this to be what you want
-  name: "lifespan"
-
-  #Permission of main command
-  #You can change this to be what you want
-  permission: "op"
-
-  #Aliases of main command
-  #You can add, replace, or remove them as you like
-  aliases: ["lifetime", "ls", "수명"]
-
-  children:
-    #Setting of subcommands
-    #Same as main command setting
-    item:
-      name: "Item"
-      aliases: ["i", "itementity", "아이템"]
-      permission: "op"
-    arrow:
-      name: "Arrow"
-      aliases: ["a", "arrowentity", "화살"]
-      permission: "op"
\ No newline at end of file
diff --git a/resources/command/kor.yml b/resources/command/kor.yml
deleted file mode 100644
index 0c6a007..0000000
--- a/resources/command/kor.yml
+++ /dev/null
@@ -1,28 +0,0 @@
-# LifeSpan 플러그인을 위한 고급 설정 파일
-# 이 설정들 중 일부는 안전하지만, 또 다른 것들은 잘못 수정했을 경우 서버에 오류가 발생할 수 있습니다
-# 새로운 설정/기본은 이 파일을 업그레이드할 때 자동으로 나타나지 않습니다
-
-lifespan:
-  #메인 명령어의 이름
-  #원하는대로 수정할 수 있습니다
-  name: "lifespan"
-
-  #메인 명령어의 권한
-  #원하는대로 수정할 수 있습니다
-  permission: "op"
-
-  #메인 명령어의 별칭들
-  #원하는대로 추가, 수정, 삭제할 수 있습니다
-  aliases: ["lifetime", "ls", "수명"]
-
-  children:
-    #하위 명령어들의 설정
-    #메인 명령어 설정과 동일합니다
-    item:
-      name: "Item"
-      aliases: ["i", "itementity", "아이템"]
-      permission: "op"
-    arrow:
-      name: "Arrow"
-      aliases: ["a", "arrowentity", "화살"]
-      permission: "op"
\ No newline at end of file
diff --git a/resources/command/rus.yml b/resources/command/rus.yml
deleted file mode 100644
index ee57224..0000000
--- a/resources/command/rus.yml
+++ /dev/null
@@ -1,29 +0,0 @@
-# Файл продвинутой конфигурации плагина Lifespan
-# Некоторые из этих настроек являются безопасными, другие могут сломать ваш сервер, если они изменены неправильно
-# Новые настройки / значения по умолчанию не будут отображаться автоматически в этом файле при обновлении
-# Translated by @SteinsSquad
-
-lifespan:
-  #Название комманды
-  #Вы можете изменить это так, как захотите
-  name: "lifespan"
-
-  #Право основной комманды
-  #Вы можете изменить это так, как захотите
-  permission: "op"
-
-  #Псевдоним основной комманды
-  #Вы можете изменять, удалять, добавлять это так, как захотите
-  aliases: ["lifetime", "ls", "수명"]
-
-  children:
-    #Настройка суб-комманд
-    #Также, как с настройкой комманды
-    item:
-      name: "Item"
-      aliases: ["i", "itementity", "아이템"]
-      permission: "op"
-    arrow:
-      name: "Arrow"
-      aliases: ["a", "arrowentity", "화살"]
-      permission: "op"
\ No newline at end of file
diff --git a/resources/config.yml b/resources/config.yml
new file mode 100644
index 0000000..ad6aba6
--- /dev/null
+++ b/resources/config.yml
@@ -0,0 +1,9 @@
+# Main configuration file for Lifespan
+# Some of these settings are safe, others can break your server if modified incorrectly
+# New settings/defaults won't appear automatically in this file when upgrading.
+
+# Item entity lifespan [float: seconds] (default: 300)
+item-lifespan: 300
+
+# arrow entity lifespan [float: seconds] (default: 60)
+arrow-lifespan: 60
\ No newline at end of file
diff --git a/resources/locale/eng.ini b/resources/locale/eng.ini
deleted file mode 100644
index 2016d6b..0000000
--- a/resources/locale/eng.ini
+++ /dev/null
@@ -1,22 +0,0 @@
-; Language configuration file for Lifespan plugin
-; New settings/defaults won't appear automatically on this file when upgrading
-
-language.name = English
-
-
-; generic command messages
-commands.generic.num.invalid = {%0} is not number
-commands.generic.num.tooBig = {%0} is too big, it must be at most {%1}
-commands.generic.num.tooSmall = {%0} is too small, it must be at least {%1}
-
-
-; main command messages
-commands.lifespan.description = Set entity's lifespan
-
-commands.lifespan.item.name = Item
-commands.lifespan.item.success = Item's lifespan was setted to {%0} seconds
-commands.lifespan.item.parameter.seconds = seconds
-
-commands.lifespan.arrow.name = Arrow
-commands.lifespan.arrow.success = Arrow's lifespan was setted to {%0} seconds
-commands.lifespan.arrow.parameter.seconds = seconds
\ No newline at end of file
diff --git a/resources/locale/kor.ini b/resources/locale/kor.ini
deleted file mode 100644
index 6dac6fe..0000000
--- a/resources/locale/kor.ini
+++ /dev/null
@@ -1,22 +0,0 @@
-; Lifespan 플러그인을 위한 언어 설정 파일
-; 새로운 설정/기본은 이 파일을 업그레이드할 때 자동으로 나타나지 않습니다
-
-language.name = 한국어
-
-
-; generic command messages
-commands.generic.num.invalid = {%0}는 숫자가 아닙니다
-commands.generic.num.tooBig = 입력한 숫자({%0})가 너무 큽니다, 최대 {%1} 이하여야 합니다
-commands.generic.num.tooSmall = 입력한 숫자({%0})가 너무 작습니다, 최소 {%1} 이상이어야 합니다
-
-
-; main command messages
-commands.lifespan.description = 엔티티의 수명을 설정
-
-commands.lifespan.item.name = 아이템
-commands.lifespan.item.success = 아이템의 수명이 {%0}초로 설정되었습니다
-commands.lifespan.item.parameter.seconds = 초
-
-commands.lifespan.arrow.name = 화살
-commands.lifespan.arrow.success = 화살의 수명이 {%0}초로 설정되었습니다
-commands.lifespan.arrow.parameter.seconds = 초
\ No newline at end of file
diff --git a/resources/locale/rus.ini b/resources/locale/rus.ini
deleted file mode 100644
index 6d43327..0000000
--- a/resources/locale/rus.ini
+++ /dev/null
@@ -1,23 +0,0 @@
-; Языковая кофигурация плагина Lifespan
-; Новые настройки/значения по умолчанию не будут отображаться автоматически в этом файле при обновлении
-; Translated by @SteinsSquad
-
-language.name = Русский
-
-
-; Основные сообщения
-commands.generic.num.invalid = {%0} не является числом
-commands.generic.num.tooBig = {%0} слишком большое число, оно должно быть не больше {%1}
-commands.generic.num.tooSmall = {%0} слишком маленькое число, оно должно быть не меньше {%1}
-
-
-; Основые сообщения комманд
-commands.lifespan.description = Установить продолжительность жизни сущности
-
-commands.lifespan.item.name = Item
-commands.lifespan.item.success = Продолжительность жизни Item установленна на {%0} секунд.
-commands.lifespan.item.parameter.seconds = seconds
-
-commands.lifespan.arrow.name = Arrow
-commands.lifespan.arrow.success = Продолжительность жизни Arrow установленна на {%0} секунд.
-commands.lifespan.arrow.parameter.seconds = seconds
\ No newline at end of file
diff --git a/src/kim/present/lifespan/Main.php b/src/kim/present/lifespan/Main.php
index 24b97aa..dbc4c00 100644
--- a/src/kim/present/lifespan/Main.php
+++ b/src/kim/present/lifespan/Main.php
@@ -27,108 +27,46 @@
 
 namespace kim\present\lifespan;
 
-use blugin\lib\command\BaseCommandTrait;
-use blugin\lib\command\listener\AvaliableCommandListener;
-use blugin\lib\translator\traits\TranslatorHolderTrait;
-use blugin\lib\translator\TranslatorHolder;
-use blugin\traits\singleton\SingletonTrait;
-use kim\present\lifespan\command\overload\ArrowLifespanOverload;
-use kim\present\lifespan\command\overload\ItemLifespanOverload;
+use Closure;
+use InvalidArgumentException;
 use pocketmine\entity\object\ItemEntity;
 use pocketmine\entity\projectile\Arrow;
 use pocketmine\event\entity\EntitySpawnEvent;
+use pocketmine\event\entity\ProjectileHitEvent;
 use pocketmine\event\Listener;
 use pocketmine\plugin\PluginBase;
 
-class Main extends PluginBase implements Listener, TranslatorHolder{
-    use TranslatorHolderTrait, BaseCommandTrait, SingletonTrait;
-
-    public const TAG_ITEM = "Item";
-    public const TAG_ARROW = "Arrow";
-
-    /** @var int[] */
-    private $typeMap;
-
-    /** @var int (short) */
-    private $itemLifespan = 6000;
-
-    /** @var int (short) */
-    private $arrowLifespan = 1200;
-
-    public function onLoad() : void{
-        self::$instance = $this;
-
-        $this->loadLanguage();
-        $this->getBaseCommand();
-    }
+class Main extends PluginBase implements Listener{
+    private int $itemLifespan = 6000;
+    private int $arrowLifespan = 1200;
 
     public function onEnable() : void{
-        //Register main command with subcommands
-        $command = $this->getBaseCommand();
-        $command->addOverload(new ItemLifespanOverload($command));
-        $command->addOverload(new ArrowLifespanOverload($command));
-        $this->getServer()->getCommandMap()->register($this->getName(), $command);
-
-        //Load lifespan data
-        $dataPath = "{$this->getDataFolder()}lifespan.json";
-        if(!file_exists($dataPath)){
-            $this->itemLifespan = 6000;  //default:  5 minutes
-            $this->arrowLifespan = 1200; //default: 60 seconds
-            return;
-        }
+        $config = $this->getConfig();
+        $this->setItemLifespan($config->getNested("item-lifespan", 300) * 20);
+        $this->setArrowLifespan($config->getNested("arrow-lifespan", 60) * 20);
 
-        $content = file_get_contents($dataPath);
-        if($content === false)
-            throw new \RuntimeException("Unable to load lifespan.json file");
-
-        $data = json_decode($content, true);
-        if(!is_array($data) || count($data) < 2 || !isset($data[self::TAG_ITEM]) || !is_numeric($data[self::TAG_ITEM]) || !isset($data[self::TAG_ARROW]) || !is_numeric($data[self::TAG_ARROW])){
-            throw new \RuntimeException("Invalid data in lifespan.json file. Must be int array");
-        }
-        $this->setItemLifespan((int) $data[self::TAG_ITEM]);
-        $this->setArrowLifespan((int) $data[self::TAG_ARROW]);
-
-        //Register event listeners
         $this->getServer()->getPluginManager()->registerEvents($this, $this);
-        AvaliableCommandListener::register($this);
     }
 
-    public function onDisable() : void{
-        //Unregister main command with subcommands
-        $this->getServer()->getCommandMap()->unregister($this->getBaseCommand());
-
-        //Save lifespan data
-        $dataPath = "{$this->getDataFolder()}lifespan.json";
-        file_put_contents($dataPath, json_encode([
-            self::TAG_ITEM => $this->itemLifespan,
-            self::TAG_ARROW => $this->arrowLifespan
-        ], JSON_PRETTY_PRINT));
-    }
-
-    /**
-     * @priority MONITOR
-     */
+    /** @priority MONITOR */
     public function onEntitySpawnEvent(EntitySpawnEvent $event) : void{
         $entity = $event->getEntity();
         if($entity instanceof ItemEntity){
-            static $itemLifeProperty = null;
-            if($itemLifeProperty === null){
-                $itemReflection = new \ReflectionClass(ItemEntity::class);
-                $itemLifeProperty = $itemReflection->getProperty("age");
-                $itemLifeProperty->setAccessible(true);
-            }
-            $before = $itemLifeProperty->getValue($entity);
-            $itemLifeProperty->setValue($entity, min(0x7fff, max(0, $before + 6000 - $this->getItemLifespan())));
-        }elseif($entity instanceof Arrow){
-            static $arrowLifeProperty = null;
-            if($arrowLifeProperty === null){
-                $arrowReflection = new \ReflectionClass(Arrow::class);
-                $arrowLifeProperty = $arrowReflection->getProperty("collideTicks");
-                $arrowLifeProperty->setAccessible(true);
-            }
+            $entity->setDespawnDelay($this->getItemLifespan());
+        }
+    }
 
-            $before = $arrowLifeProperty->getValue($entity);
-            $arrowLifeProperty->setValue($entity, min(0x7fff, max(0, $before + 1200 - $this->getArrowLifespan())));
+    /** @priority MONITOR */
+    public function onProjectileHitEvent(ProjectileHitEvent $event) : void{
+        $entity = $event->getEntity();
+        if($entity instanceof Arrow){
+            Closure::bind( //HACK: Closure bind hack to access inaccessible members
+                closure: function() use ($entity) : void{
+                    $entity->collideTicks = 1200 - $this->getArrowLifespan();
+                },
+                newThis: $this,
+                newScope: Arrow::class
+            )();
         }
     }
 
@@ -138,9 +76,9 @@ public function getItemLifespan() : int{
 
     public function setItemLifespan(int $value) : void{
         if($value < 0){
-            throw new \InvalidArgumentException("Value {$value} is too small, it must be at least 0");
+            throw new InvalidArgumentException("Value $value is too small, it must be at least 0");
         }elseif($value > 0x7fff){
-            throw new \InvalidArgumentException("Value {$value} is too big, it must be at most 0x7fff");
+            throw new InvalidArgumentException("Value $value is too big, it must be at most 0x7fff");
         }
         $this->itemLifespan = $value;
     }
@@ -151,9 +89,9 @@ public function getArrowLifespan() : int{
 
     public function setArrowLifespan(int $value) : void{
         if($value < 0){
-            throw new \InvalidArgumentException("Value {$value} is too small, it must be at least 0");
+            throw new InvalidArgumentException("Value $value is too small, it must be at least 0");
         }elseif($value > 0x7fff){
-            throw new \InvalidArgumentException("Value {$value} is too big, it must be at most 0x7fff");
+            throw new InvalidArgumentException("Value $value is too big, it must be at most 0x7fff");
         }
         $this->arrowLifespan = $value;
     }
diff --git a/src/kim/present/lifespan/command/overload/ArrowLifespanOverload.php b/src/kim/present/lifespan/command/overload/ArrowLifespanOverload.php
deleted file mode 100644
index 10ae77c..0000000
--- a/src/kim/present/lifespan/command/overload/ArrowLifespanOverload.php
+++ /dev/null
@@ -1,46 +0,0 @@
-<?php
-
-/**
- *  ____                           _   _  ___
- * |  _ \ _ __ ___  ___  ___ _ __ | |_| |/ (_)_ __ ___
- * | |_) | '__/ _ \/ __|/ _ \ '_ \| __| ' /| | '_ ` _ \
- * |  __/| | |  __/\__ \  __/ | | | |_| . \| | | | | | |
- * |_|   |_|  \___||___/\___|_| |_|\__|_|\_\_|_| |_| |_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author  PresentKim (debe3721@gmail.com)
- * @link    https://github.com/PresentKim
- * @license https://www.gnu.org/licenses/lgpl-3.0 LGPL-3.0 License
- *
- *   (\ /)
- *  ( . .) ♥
- *  c(")(")
- *
- * @noinspection PhpUnused
- */
-
-declare(strict_types=1);
-
-namespace kim\present\lifespan\command\overload;
-
-use blugin\lib\command\BaseCommand;
-use blugin\lib\command\overload\Overload;
-use lifespan\Lifespan;
-use pocketmine\command\CommandSender;
-
-class ArrowLifespanOverload extends LifespanOverload{
-    public function __construct(BaseCommand $baseCommand){
-        parent::__construct($baseCommand, "arrow");
-    }
-
-    /** @param mixed[] $args name => value */
-    public function handle(CommandSender $sender, array $args, Overload $overload) : bool{
-        Lifespan::getInstance()->setArrowLifespan((int) ($args["seconds"] * 20));
-        $this->sendMessage($sender, "success", [(string) $args["seconds"]]);
-        return true;
-    }
-}
\ No newline at end of file
diff --git a/src/kim/present/lifespan/command/overload/ItemLifespanOverload.php b/src/kim/present/lifespan/command/overload/ItemLifespanOverload.php
deleted file mode 100644
index 1fd1e47..0000000
--- a/src/kim/present/lifespan/command/overload/ItemLifespanOverload.php
+++ /dev/null
@@ -1,46 +0,0 @@
-<?php
-
-/**
- *  ____                           _   _  ___
- * |  _ \ _ __ ___  ___  ___ _ __ | |_| |/ (_)_ __ ___
- * | |_) | '__/ _ \/ __|/ _ \ '_ \| __| ' /| | '_ ` _ \
- * |  __/| | |  __/\__ \  __/ | | | |_| . \| | | | | | |
- * |_|   |_|  \___||___/\___|_| |_|\__|_|\_\_|_| |_| |_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author  PresentKim (debe3721@gmail.com)
- * @link    https://github.com/PresentKim
- * @license https://www.gnu.org/licenses/lgpl-3.0 LGPL-3.0 License
- *
- *   (\ /)
- *  ( . .) ♥
- *  c(")(")
- *
- * @noinspection PhpUnused
- */
-
-declare(strict_types=1);
-
-namespace kim\present\lifespan\command\overload;
-
-use blugin\lib\command\BaseCommand;
-use blugin\lib\command\overload\Overload;
-use lifespan\Lifespan;
-use pocketmine\command\CommandSender;
-
-class ItemLifespanOverload extends LifespanOverload{
-    public function __construct(BaseCommand $baseCommand){
-        parent::__construct($baseCommand, "item");
-    }
-
-    /** @param mixed[] $args name => value */
-    public function handle(CommandSender $sender, array $args, Overload $overload) : bool{
-        Lifespan::getInstance()->setItemLifespan((int) ($args["seconds"] * 20));
-        $this->sendMessage($sender, "success", [(string) $args["seconds"]]);
-        return true;
-    }
-}
\ No newline at end of file
diff --git a/src/kim/present/lifespan/command/overload/LifespanOverload.php b/src/kim/present/lifespan/command/overload/LifespanOverload.php
deleted file mode 100644
index 8a0c758..0000000
--- a/src/kim/present/lifespan/command/overload/LifespanOverload.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-
-/**
- *  ____                           _   _  ___
- * |  _ \ _ __ ___  ___  ___ _ __ | |_| |/ (_)_ __ ___
- * | |_) | '__/ _ \/ __|/ _ \ '_ \| __| ' /| | '_ ` _ \
- * |  __/| | |  __/\__ \  __/ | | | |_| . \| | | | | | |
- * |_|   |_|  \___||___/\___|_| |_|\__|_|\_\_|_| |_| |_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author  PresentKim (debe3721@gmail.com)
- * @link    https://github.com/PresentKim
- * @license https://www.gnu.org/licenses/lgpl-3.0 LGPL-3.0 License
- *
- *   (\ /)
- *  ( . .) ♥
- *  c(")(")
- *
- * @noinspection PhpUnused
- */
-
-declare(strict_types=1);
-
-namespace kim\present\lifespan\command\overload;
-
-use blugin\lib\command\BaseCommand;
-use blugin\lib\command\handler\ICommandHandler;
-use blugin\lib\command\overload\NamedOverload;
-use blugin\lib\command\parameter\defaults\FloatParameter;
-
-abstract class LifespanOverload extends NamedOverload implements ICommandHandler{
-    public function __construct(BaseCommand $baseCommand, string $name){
-        parent::__construct($baseCommand, $name);
-        $this->addParamater((new FloatParameter("seconds"))->setMin(0)->setMax(0x7fff));
-        $this->setHandler($this);
-    }
-}
\ No newline at end of file