花子, Hanako-kun,花子くん

Hanako is a ghost and one of Kamome Academy's Seven Mysteries. He lives in the girl's toilet on the 3rd floor in the old school building. He grants anyone's a wish in exchange of a price.

His real name is Yugi Amane (柚木普) and is the older twin brother of Yugi Tsukasa. As Amane, he previously attended the Kamome Academy as a student.