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 boyfriends 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 did not book another room but shared a room with Meiko. While taking a bath, Rin accidentally caught Meiko and Kashigawa making love. Being so lonely and seeing Kashigawa's giant stick made Rin's thirst for love increase. Waiting for Meiko to go to sleep, she woke up and used her body to seduce her best friend's boyfriend...
