Wataru's friend Akio arrives at the island for a visit and all the sisters like him except for Mami, who hides and acts nervous. We find out that Akio is actually Mami's older brother, and that he is the one who has been e-mailing her orders, and that her orders are to force Wataru off the island using any means necessary. Mami refuses to do her brother's bidding any more, and Akio cold-heartedly tells her to just stay out of the way. When Wataru and Akio are about to go to sleep that night, Akio reveals to Wataru that he did not just come to visit. Akio tells Wataru that his high school accepted him, and he would not even have to start a year late. Akio came to take Wataru back to Tokyo.