May is the younger sister of Maki and, like her sister, serves as Machist's housemaid. Their parents were colleagues of Machist, but after they died in an accident, Machist took custody of them, and soon they became his maids. May is soft-spoken and a bit air-headed, but don't let her airheaded appearance fool you... She's actually as alert, intelligent and crafty as her elder sister (if not better than her at times), and can be pretty dangerous when angry, even if she does everything with a smile on her face.