Kiridera Mei

A student at Ribun 6 Academy and the leader of Ψcliminal. Extreme rationalist and merciless. Controls people and will not hesitate to kill.

Kiridera's birth name is "Maina Mei." He is the twin brother of Myuu, and the younger brother of Narumi. He and Myuu are naturally-born Ψ-users, and turn 18 during the events of the story.