"Chinseki."

After watching her girlfriend seduce a stranger at a nightclub, Reina finds herself in the same stranger's hotel room only an hour later. Girlfriend Aiko and her new friend seem ready to go for round two, but there's one thing holding Reina back: this third wheel is more masculine than she's comfortable with. Will Reina let go of her gendered insecurities and have a good time, or will her new friend's request for "chinseki," or "sleeping together," be too much for her to handle?