It's a witches game. Fantasy against mystery. Witches against humans. There are a lot of old witches, so I don't know who started it. The Rokkenjima game was started by the Golden Witch, Beatrice.

[Opens his eyes and looks at Kaito, his face not showing any emotion. He remembered his old man always having the same smug smile, whether his plans were going good or bad. Kyrie-san was also an expert.]