There used to be a coach at this school who was accused of sexual harassment. But eventually, the matter was reported to the police, and he left the school. Just as Mizuki, the new captain of the swim team, was rallying to turn the club around, a new coach was appointed. The coach’s name was Goenji. It was that perverted coach who was supposed to have left the school. Goenji had made a pact with a demon and gained the “power to manipulate others at will.” Those worst-case nightmare-like days had begun all over again.

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