Yuuguu Settai: Kotou no Gokuraku e Youkoso - Season 1

Ohmi Riku temporarily assumes the position of janitor at a remote island training facility operated by a high school, a post he is to hold for two weeks. He anticipates a quiet stay among the members of the swimming club and their instructor. This expectation shifts when he discovers a collection of covertly recorded video tapes. The recordings depict a man, likely the previous janitor, molesting a girl in a swimsuit. Riku further learns this individual habitually took surreptitious photographs. Initially disdainful, Riku seals away the tape. Yet he gradually finds himself sympathizing with the departed janitor's corrupt inclinations.