Rank 5: Reisuke Hōjō (豊穣 礼佑), he look like a harmless
womanboy, but don't underestimate him this diabolical mind. He's the owner of the Hyper Vision Diary which is a coloring book that gives a small summary of the activities that he will perform for the day. However, his diary only shows three entries for the day during the morning, noon, and night.
The funny is that Demeter's also crazy, just not murder crazy. (Well, if you count trying to kill Hades to bring back her daughter.)