満月続きすぎると妖怪も困るみたいな事永夜抄で言ってたけど
お酒みたいなものと勝手に想像　【アンケート　月といえば？】

It was said back in Imperishable Night that a full moon continuing for too long will be troublesome for youkai as well. They'll let their imagination go wild with things like alcohol.

Poll: When it comes to the Moon?
• Turn A Gundam
• Tsukihime
• Apollo
• Imperishable Night