diff --git a/game/wrapper/Concord/component.lua b/game/wrapper/Concord/component.lua
new file mode 100644
index 0000000..842f728
--- /dev/null
+++ b/game/wrapper/Concord/component.lua
@@ -0,0 +1,37 @@
+local Concord = require("lib.Concord")
+
+-- Modules
+local Entity     = Concord.entity
+local Component  = Concord.component
+local System     = Concord.system
+local World      = Concord.world
+
+-- Containers
+local Components  = Concord.components
+
+local constructor = {}
+
+function constructor.default_component_lambda(c, data)
+  c.data = data
+end
+
+--- build component ecs component
+---@param name string
+---@param lambda? function(c, data)
+function constructor.component(name, lambda)
+  local ok, value = Components.try(name)
+  if not ok then
+    return Component(name, lambda or constructor.default_component_lambda)
+  end
+end
+
+--- build component ecs state
+---@param name string
+function constructor.state(name)
+  local ok, value = Components.try(name)
+  if not ok then
+    return Component(name)
+  end
+end
+
+return constructor
diff --git a/game/wrapper/Concord/entity.lua b/game/wrapper/Concord/entity.lua
new file mode 100644
index 0000000..3786627
--- /dev/null
+++ b/game/wrapper/Concord/entity.lua
@@ -0,0 +1,91 @@
+local format = string.format
+
+local reap = require("lib.reap")
+
+local BASE = reap.base_path(...)
+local component_builder = require(format("%s.component", BASE))
+
+local Concord = require("lib.Concord")
+
+-- Modules
+local Entity     = Concord.entity
+local Component  = Concord.component
+local System     = Concord.system
+local World      = Concord.world
+
+-- Containers
+local Components  = Concord.components
+
+local constructor = {}
+
+--- build entity ecs
+function constructor.new(system)
+  if (type(system) == "table") then
+    local e = Entity()
+    for _, s in pairs(system) do
+      for c, f in pairs(s.components) do
+        if (type(c) == "string") then
+          component_builder.component(c, f)
+        else
+          component_builder.state(f)
+        end
+      end
+    end
+    return e
+  elseif (system == nil) then
+    return Entity()
+  else
+    return nil
+  end
+end
+
+--- ensure component
+---@param entity any
+---@param name string
+function constructor.ensure(entity, name, ...)
+  if (#{...} == 0) then
+    component_builder.state(name)
+    entity:ensure(name)
+  else
+    component_builder.component(name)
+    entity:ensure(name, ...)
+  end
+end
+
+--- give component
+---@param entity any
+---@param name string
+function constructor.give(entity, name, ...)
+  if (#{...} == 0) then
+    component_builder.state(name)
+    entity:give(name)
+  else
+    component_builder.component(name)
+    entity:give(name, ...)
+  end
+end
+
+function constructor.remove(entity, name)
+  if Components.has(name) == false then
+    return false, nil
+  else
+    if entity:has(name) then
+      local data = entity[name]
+      entity:remove(name)
+      return true, data
+    else
+      return false, nil
+    end
+  end
+end
+
+function constructor.destroy(entity)
+  local all_c = entity:getComponents()
+  for c_id, c in ipairs(all_c) do
+    entity:remove(c)
+    print("destroy", c_id, c)
+  end
+  entity:destroy()
+end
+
+return constructor
diff --git a/game/wrapper/Concord/system.lua b/game/wrapper/Concord/system.lua
new file mode 100644
index 0000000..beed534
--- /dev/null
+++ b/game/wrapper/Concord/system.lua
@@ -0,0 +1,84 @@
+local insert = table.insert
+
+local Concord = require("lib.Concord")
+
+-- Modules
+local Entity     = Concord.entity
+local Component  = Concord.component
+local System     = Concord.system
+local World      = Concord.world
+
+-- Containers
+local Components  = Concord.components
+
+
+local constructor = {}
+
+constructor.systems = {}
+
+local function is_component_complete(pool)
+  local is_complete = true
+  for _, v in pairs(pool) do
+    for _, c in ipairs(v) do
+      if (Components.has(c) == false) then
+        is_complete = false
+        break
+      end
+    end
+    if (not is_complete) then
+      break
+    end
+  end
+  return is_complete
+end
+
+function constructor.new(name, pool)
+  if (constructor.systems[name]) then
+    return constructor.systems[name]
+  else
+    if (type(pool) == "table") then
+      if (is_component_complete(pool)) then
+        local self = System(pool)
+        self.name = name
+        constructor.systems[name] = self
+        return self
+      else
+        return nil
+      end
+    else
+      error("new system register error. pool and wrapper should be a table.")
+      return nil
+    end
+  end
+end
+
+function constructor.add(world, path)
+  local namespace = {}
+  if (type(path) == "string") then
+    Concord.utils.loadNamespace(path, namespace)
+  else
+    for k,v in pairs(path) do
+      if type(v) == "string" then
+        local new_namespace = {}
+        Concord.utils.loadNamespace(v, new_namespace)
+        for l, w in pairs(new_namespace) do
+          namespace[l] = w
+        end
+      else
+        insert(namespace, v)
+      end
+    end
+  end
+  for k,v in pairs(namespace) do
+    local new_sys = v.new()
+    if (new_sys == nil) then
+
+    else
+      if not world:hasSystem(new_sys) then
+        world:addSystems(new_sys)
+      end
+    end
+  end
+end
+
+return constructor
diff --git a/game/wrapper/Concord/world.lua b/game/wrapper/Concord/world.lua
index e70231d..b3352c0 100644
--- a/game/wrapper/Concord/world.lua
+++ b/game/wrapper/Concord/world.lua
@@ -1,12 +1,12 @@
 local format = string.format
 
-local reap = require("libs.reap")
+local reap = require("lib.reap")
 
 local BASE = reap.base_path(...)
 local component_builder = require(format("%s.component", BASE))
 local entity_builder = require(format("%s.entity", BASE))
 
-local Concord = require("libs.Concord")
+local Concord = require("lib.Concord")
 
 -- Modules
 local Entity     = Concord.entity