diff --git a/src/pm_kun/screen/__init__.py b/src/pm_kun/screen/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/pm_kun/screen/main.py b/src/pm_kun/screen/main.py
new file mode 100644
index 0000000..f7ca599
--- /dev/null
+++ b/src/pm_kun/screen/main.py
@@ -0,0 +1,20 @@
+from kivy.app import App
+from kivy.uix.widget import Widget
+
+"""
+「xxx.kv」のxxx部分はclassの「XxxApp」の「Xxx」に対応している
+ name "Pmk" is short name in ProjectManagement Kun
+"""
+
+
+class PmkGame(Widget):
+    pass
+
+
+class PmkApp(App):
+    def build(self):
+        return PmkGame()
+
+
+if __name__ == "__main__":
+    PmkApp().run()
diff --git a/src/pm_kun/screen/pmk.kv b/src/pm_kun/screen/pmk.kv
new file mode 100644
index 0000000..9c0f43e
--- /dev/null
+++ b/src/pm_kun/screen/pmk.kv
@@ -0,0 +1,19 @@
+#:kivy 1.0.9
+
+<PmkGame>:    
+    canvas:
+        Rectangle:
+            pos: self.center_x - 5, 0
+            size: 10, self.height
+            
+    Label:
+        font_size: 70  
+        center_x: root.width / 4
+        top: root.top - 50
+        text: "0"
+        
+    Label:
+        font_size: 70  
+        center_x: root.width * 3 / 4
+        top: root.top - 50
+        text: "0"
\ No newline at end of file
diff --git a/src/pm_kun/task/todo.py b/src/pm_kun/task/todo.py
index 9a65586..ce245ea 100644
--- a/src/pm_kun/task/todo.py
+++ b/src/pm_kun/task/todo.py
@@ -1,5 +1,5 @@
 from datetime import date
-from typing import List, Optional
+from typing import List, Optional, Union
 from pm_kun.type_definition import Priority, Status, ToDo
 
 
@@ -63,11 +63,13 @@ def update_task(
                 break
         return None
 
-    def search_task(self, id: str) -> None:
+    def search_task(self, id: str) -> Union[str, None]:
         """
         タスクを検索するメソッド
         Args:
         """
         for task in self.todo_list:
             if task["id"] == id:
-                return task
+                return task["task"]
+            else:
+                return None