Rikudou

Affiliation: The Corporation
Bug: Snail
Ability: Extremity - Little Maria. A power holding properties of a little sun that excels in the manipulation of light.

Like her ability, a cheerful person radiating happiness and childlike curiosity wherever she goes. Participant in the previous death game and like an elder sister to still young Hozumi and Nanahara. She's good friends with the elder of the Tsukumo sisters and even manages to make the otherwise serious and pragmatic Rokusaidou warm up to her.

Fighting Tsumabira causes her ability to accidentally evolves to next stage, turning her into a living sun that risks destroying the Earth, forcing the elder Tsukumo sister to use her Defrag.