Revert "ファイル構造の変更"

This reverts commit f52fa935f1d37ed6a3dd948349298f7d456f69d2.
Revert "Revert "ファイル構造の変更""

This reverts commit c7908a6c656931759a9885edb3dd50a9e813339d.
Revert c7908a6..6e40e5b

This rolls back to commit c7908a6c656931759a9885edb3dd50a9e813339d.