海棠 璃々子

Screen name: Lilith
Class: Bishop

Shuuho's younger sister who has eighth-grade syndrome. Because of this disease, she began researching supernatural phenomena, and will conduct strange ritual imitations which scares everyone around her. She often plays games with her brother, and they are about the same skill level. As one of the founders of the study of entertainment, she always has time whether at school or home and always spends that time with her brother.

As a member of the Bishop class, Ririko is basically the team's buffer. She often chants healing and buffing spells instead of attacking.