A group sex movie by Rin Kira, Meiko Nakao, Because Meiko’s father is too strict, she has never been able to spend the night with her lover. So after discussing with Rin, the two decided to take their boyfriend on a trip together. That day, Rin’s boyfriend was called home by his wife, so Rin had to go alone. Because she was so disappointed, she didn’t book an extra room, but shared a room with Meiko. While taking a bath, Rin accidentally caught Meiko and Kashigawa making love. Because she was so lonely and seeing Kashigawa’s giant stick made Rin’s thirst for love soar. Waiting for Meiko to go to sleep, she woke up and used her body to seduce her best friend’s boyfriend…