甲斐田晴 (かいだはる) -Haru Kaida-

皇都でも著名な、「魔」の研究者。屋敷で研究に没頭しており、その姿を知る者は少ない。
切れ者だが怠け者でもあるため、 興味のないことには関わろうとしない。

He is a famous researcher of "demons" in the Imperial Capital. He stays at home and devotes himself to his research, and few people know him.
He is a sharp but lazy person, and will not get involved in anything that does not interest him.