On the day she left for a trip, I received a sudden call from Aoi, a junior who had dumped me a long time ago, and I went to the dormitory where she lives. Of course, no men are allowed in the dormitory, but taking advantage of the summer vacation when the dorm mother and students are away, Aoi's friend Ichika seduces me. Aoi, who had heard the sounds of their lovemaking, also confronted me. For three days until she returned home, we made love like monkeys.