diff --git a/docs/kr/tutorial/0_gettingStarted.md b/docs/kr/tutorial/0_gettingStarted.md
new file mode 100644
index 0000000..4e07b02
--- /dev/null
+++ b/docs/kr/tutorial/0_gettingStarted.md
@@ -0,0 +1,18 @@
+
+# Getting Started
+
+## 머리말
+
+이 페이지는 Quad 모듈을 쉽게 시작할 수 있도록 튜토리얼을 제공하고 있습니다. 이 페이지를 정독해 Quad 모듈의 전반적인 사용법을 파악해보세요!  
+
+## 설치
+
+
+
+[다음 페이지로 가기](kr/tutorial/1_install)  
+
+## 목차
+
+[1. 설치하기](kr/tutorial/1_install)  
+[2. 시작하기](kr/tutorial/2_starting)  
+
diff --git a/docs/kr/tutorial/1_install.md b/docs/kr/tutorial/1_install.md
new file mode 100644
index 0000000..e69de29
diff --git a/src/exports.lua b/src/exports.lua
new file mode 100644
index 0000000..7461eaa
--- /dev/null
+++ b/src/exports.lua
@@ -0,0 +1,75 @@
+---@class quad
+local module = {}
+
+-- TODO: outside ui building
+-- if not Instance then
+-- 	print("Instance is not exist, Using custom Instance and print result as string . . .")
+-- end
+
+local require = require(script.Parent.libs.require)
+local style   = require "style"
+local event   = require "event"
+local store   = require "store"
+local class   = require "class"
+local mount   = require "mount"
+local signal  = require "signal"
+local lang    = require "lang"
+
+-- submodule
+local advancedTween = require "libs.AdvancedTween"
+local round         = require "libs.round"
+local customWarn    = require "libs.customWarn"
+
+local IS_TEST = false
+local VER = "2.18" .. (IS_TEST and "B" or "")
+if IS_TEST then
+	warn("You are using BETA version of quad now. Many features may change in the future and unstable. AS USING BETA VERSION OF QUAD, YOU SHOULD KNOW IT WILL BUGGY SOMETIME. still on development - you can ignore this message if have no issue. if you have issue on using quad, please report issue on github. VERSION: "..VER)
+end
+
+local idSpace = {}
+
+---@return quad_export this
+---@return quad_module_round round
+---@return quad_module_tween tween
+function module.Init(id)
+	-- return old items
+	if id then
+		local this = idSpace[id]
+		if this then
+			return this,this.round,this.class,this.mount,this.store,this.event,this.tween
+		end
+	end
+
+	---@class quad_export
+	local this = {__type = "quad_module_init"}
+
+	this.require = require
+	this.warn    = customWarn or warn
+	this.Round   = type(round) == "table" and round ---@type quad_module_round
+	this.Tween   = type(advancedTween) == "table" and advancedTween ---@type quad_module_tween
+	this.Signal  = signal.init(this) ---@type quad_module_signal
+	this.Style   = style.init(this) ---@type quad_module_style
+	this.Event   = event.init(this) ---@type quad_module_event
+	this.Store   = store.init(this) ---@type quad_module_store
+	this.Mount   = mount.init(this) ---@type quad_module_mount
+	this.Class   = class.init(this) ---@type quad_module_class
+	this.Lang    = lang.init(this) ---@type quad_module_lang
+
+	-- save
+	if id then
+		idSpace[id] = this
+	end
+
+	return this
+end
+
+local function cleanup(space)
+	-- TODO : Destroy objects
+end
+
+function module.Uninit(id)
+	pcall(cleanup,idSpace[id])
+	idSpace[id] = nil
+end
+
+return module
diff --git a/src/init.lua b/src/init.lua
index 7c6f548..9daff57 100644
--- a/src/init.lua
+++ b/src/init.lua
@@ -1,74 +1,3 @@
----@class quad
-local module = {}
 
-if not Instance then
-	print("Instance is not exist, Using custom Instance and print result as string . . .")
-end
-
-local IS_TEST = true
-local VER = "2.14" .. (IS_TEST and "B" or "")
-if IS_TEST then
-	warn("You are using BETA version of quad now. Many features may change in the future and unstable. AS USING BETA VERSION OF QUAD, YOU SHOULD KNOW IT WILL BUGGY SOMETIME. still on development - you can ignore this message if have no issue. if you have issue on using quad, please report issue on github. VERSION: "..VER)
-end
-
-local require = require(script.require)
-local style = require "style"
-local event = require "event"
-local store = require "store"
-local class = require "class"
-local mount = require "mount"
-local signal = require "signal"
-local lang = require "lang"
-
--- submodule
-local _,advancedTween = pcall(require,"libs.AdvancedTween")
-local _,round = pcall(require,"libs.round")
-local _,customWarn = pcall(require,"libs.customWarn")
-
-local idSpace = {}
-
----@return quad_export this
----@return quad_module_round round
----@return quad_module_tween tween
-function module.Init(id)
-	-- return old items
-	if id then
-		local this = idSpace[id]
-		if this then
-			return this,this.round,this.class,this.mount,this.store,this.event,this.tween
-		end
-	end
-
-	---@class quad_export
-	local this = {__type = "quad_module_init"}
-
-	this.require = require
-	this.warn = customWarn or warn
-	this.Round = type(round) == "table" and round ---@type quad_module_round
-	this.Tween = type(advancedTween) == "table" and advancedTween ---@type quad_module_tween
-	this.Signal = signal.init(this) ---@type quad_module_signal
-	this.Style = style.init(this) ---@type quad_module_style
-	this.Event = event.init(this) ---@type quad_module_event
-	this.Store = store.init(this) ---@type quad_module_store
-	this.Mount = mount.init(this) ---@type quad_module_mount
-	this.Class = class.init(this) ---@type quad_module_class
-	this.Lang = lang.init(this) ---@type quad_module_lang
-
-	-- save
-	if id then
-		idSpace[id] = this
-	end
-
-	return this
-end
-
-local function cleanup(space)
-	-- TODO : Destroy objects
-end
-
-function module.Uninit(id)
-	pcall(cleanup,idSpace[id])
-	idSpace[id] = nil
-end
-
-return module
+local types = require(script.types)
+return require(script.exports)::types.module
diff --git a/src/lang.lua b/src/lang.lua
index 01c0cef..1916bca 100644
--- a/src/lang.lua
+++ b/src/lang.lua
@@ -60,13 +60,30 @@ function module.init(shared)
 		["Swedish"] = "sv_se";
 		["Arabic"] = "ar_001";
 	}
-	new.CurrentLocale = game:GetService("LocalizationService").RobloxLocaleId
-	new.FailedMessage = "<Localization Failed>"
 
+	local function GetLocale()
+		return game:GetService("LocalizationService").RobloxLocaleId
+	end
+	local function PcallGetLocale()
+		local passed,result = pcall(GetLocale)
+		if passed then return result end
+		return false
+	end
+
+	local CurrentLocale = PcallGetLocale() or "en_us"
+	local FailedMessage = "<Localization Failed>"
+
+	local weak = {__mode = "v"}
 	local lang = {}
 	lang.__index = lang
 	function lang.New(id,handlers)
-		local this = {handlers=handlers,id=id,store=store.New(),index=1}
+		local this = {
+			handlers=handlers;
+			id=id;
+			store=store.New();
+			index=1;
+			registers = setmetatable({},weak);
+		}
 		lang[id] = this
 		if not handlers[new.Locales.Default] then
 			warn(("Localization %s have no Default value, Did you missed '[Lang.Locales.Default] = ...' ? It may make Localization fail on other languages"))
@@ -115,24 +132,28 @@ function module.init(shared)
 
 	function lang:UpdateAll()
 		-- find handler
-		local handler = self.handlers[new.Lang]
+		local handler = self.handlers[CurrentLocale]
 		if not handler then
-			handler = self.handlers[new.Default]
+			handler = self.handlers[new.Locales.Default]
 		end
 
-		for index = 1,self.index do
-			Update(self.store,handler,index,options)
+		for index,register in pairs(self.registers) do
+			if handler then
+				Update(self.store,handler,index,register.options)
+			else
+				self.store[tostring(index)] = FailedMessage
+			end
 		end
 	end
 
 	function lang:Format(options)
 		-- find handler
-		local handler = self.handlers[new.Lang]
+		local handler = self.handlers[CurrentLocale]
 		if not handler then
 			handler = self.handlers[new.Locales.Default]
 		end
 		if not handler then
-			warn(("Langauge handle %s is not found on Localization %s"):format(new.Default,self.id))
+			warn(("Langauge handle Lang.Locales.Default is not found on Localization %s"):format(self.id))
 		end
 		local index = self.index
 		self.index = index + 1
@@ -140,11 +161,6 @@ function module.init(shared)
 		-- setup updater
 		local registerKeep = {}
 		-- this table will destroyed when parent register was destroyed
-		-- that means, if some other registerFN was inserted in registerKeep,
-		-- it will be destroyed when unnecessary
-		-- maybe better then self.store.__keep for GC
-		-- it will be not destroyed. anyway; registerKeep will be connected
-		-- to real instance OR local
 		for _,option in pairs(options) do
 			local quadType = PcallGetProperty(option,"__type")
 			-- if it is register, setup updater
@@ -156,9 +172,10 @@ function module.init(shared)
 						handler = self.handlers[new.Locales.Default]
 					end
 					if not handler then
-						self.store[tostring(index)] = new.FailedMessage
+						self.store[tostring(index)] = FailedMessage
+					else
+						Update(self.store,handler,index,options)
 					end
-					Update(self.store,handler,index,options)
 					-- !HOLD IT SELF TO PREVENT THIS REGISTER BEGIN REMOVED FROM MEMORY
 				end
 				option:Register(regFn)
@@ -170,13 +187,16 @@ function module.init(shared)
 		if handler then
 			Update(self.store,handler,index,options)
 		else
-			self.store[tostring(index)] = new.FailedMessage
+			self.store[tostring(index)] = FailedMessage
 		end
 
 		-- return resiter
 		local register = self.store(tostring(index))
 		register.registerKeep = registerKeep
 		register.__rtype = "LangUpdater"
+		register.index = index
+		register.options = options
+		self.registers[index] = register
 		return register
 	end
 
@@ -184,6 +204,12 @@ function module.init(shared)
 		return lang.New(id,handlers)
 	end
 
+	function new.Update()
+		for _,this in pairs(lang) do
+			this:UpdateAll()
+		end
+	end
+
 	setmetatable(new,{
 		__call = function(_,id)
 			return function (options)
@@ -194,6 +220,27 @@ function module.init(shared)
 				return data:Format(options)
 			end
 		end;
+		__index = function (self,key)
+			if key == "CurrentLocale" then
+				return CurrentLocale
+			end
+			if key == "FailedMessage" then
+				return FailedMessage
+			end
+		end;
+		__newindex = function (self,key,value)
+			if key == "CurrentLocale" then
+				CurrentLocale = value
+				new.Update()
+				return
+			end
+			if key == "FailedMessage" then
+				FailedMessage = value
+				new.Update()
+				return
+			end
+			rawset(self,key,value)
+		end
 	})
 
 	return new
diff --git a/src/require.lua b/src/libs/require.lua
similarity index 81%
rename from src/require.lua
rename to src/libs/require.lua
index 4b03f9a..6015878 100644
--- a/src/require.lua
+++ b/src/libs/require.lua
@@ -9,7 +9,7 @@ return function (query)
 	local typeQuery = type(query)
 
 	if typeQuery == "string" then
-		local object = script.Parent
+		local object = script.Parent.Parent
 		query = query:gsub("/",".")
 		-- local index = 0
 		query:gsub("[^%.]+",function (this)
@@ -21,7 +21,7 @@ return function (query)
 			object = object[this]
 			if not object then
 				object = lastObject.libs
-				error(("[Quad] (require) object %s was not found from this worktree, require failed"):format(query))
+				return false,("[Quad] (require) object %s was not found from this worktree, require failed"):format(query)
 			end
 		end)
 		return require(object)
diff --git a/testing/init.lua b/testing/init.lua
index debd271..b1da0f3 100644
--- a/testing/init.lua
+++ b/testing/init.lua
@@ -54,6 +54,9 @@ function module.init()
 
     local Global = Store.GetStore "global"
     local TweenTest = Class(script.tween)
+    local LangTest = Class(script.lang)
+
+    Signal.
 
     SetTheme(Global)
 
@@ -62,7 +65,8 @@ function module.init()
             Size = UDim2.fromOffset(400,640);
             Position = UDim2.fromScale(0.5,0.5);
             AnchorPoint = Vector2.new(0.5,0.5);
-            TweenTest{};
+            -- TweenTest{};
+            LangTest{};
         }
     }
     Mount(game.StarterGui,Store.GetObject "MainGui")