As Arisa steps into the underground Obscene Sports Day at Seven Arts, the fantasy of competition heats up with her striking big boobs on full display. Ibuki, eager to protect her new colleague without knowing the full extent, puts her body forward and gets overwhelmed in the various competitions involving blow job and creampie. Koharu watches with mocking laughter while engaging deeply with Kurozuka, adding to the sensual tension. Ultimately Ibuki confronts the shocking reality about Arisa after her desperate efforts in this hentai episode.