Сенджі Сейя

Talent: Versatile Vessel - A talent that allows one to master any other talent. There are no restrictions on the talents that can be acquired, though the time required and the level of mastery achieved depend on the quality of the mentor and the training.

The older brother of Touya Senji and one of the founders of the "Forest of Greats."

He came into conflict with Ko Sen-u after Touya was attacked by a sinner returner possessing a criminal personality; ultimately, he succumbed to a fatal wound, passing away with his thoughts fixed on Touya.