Maiku"s classmate, Kousei Shimazaki, seems to have eyes for Maiku but there also seems to be something else going on between Kousei and their upperclassman, Tsubaki Oribe. On a sunny afternoon, Maiku, Karen and Miina go out into town. But due to certain circumstances, each of the girls spends time alone with Maiku and they are tossed from temptation to break the love alliance and feelings left alone. One day, Miina comes across a friend from middle school and some things about her past are revealed.