Ayano is a young wife who has been spending her days in loneliness and growing sadness ever since her husband went on a long-term business trip shortly after they got married. The one who filled the gaping hole in her heart was Nene, a woman from a women-only sex service she met online. Although confused by Nene's lesbian acts and lesbian play, Ayano cannot forget the pleasure and finds herself seeking it out. "If it's not with a man, it's not cheating..." It started as a lighthearted thought, but gradually, she becomes attracted to and drowned in Nene and her lesbianism.
