A first-year at Reio University with serious spiritual medium abilities. He experienced a psychic breakdown during middle school that hit hard enough to send him into isolation—we're talking over two years of keeping to himself. The whole thing happened because he got tangled up with the wrong people at the time, and it clearly left a mark.
His first real attempt at getting back out there was taking a night tutoring gig, which is where he crossed paths with Yayoi. That connection pulled him into Capturing Spirit, and it seems like that's been the turning point for actually reintegrating into normal life rather than just existing alone in his room.
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