Revert "Revert "Revert "コメント増やした"""

This reverts commit 350f1cc9162fc2c22feb5f5ebbe0b182c9f537b2.
Revert "Revert "コメント増やした""

This reverts commit b932500f3624e88afa85afe2c4d418ea6ec7c742.
Revert "コメント増やした"

This reverts commit 11b0e4c5648b71c7071a90b2b24a03d88a88ef80.