Her childhood friend, Sou, returns from America for the first time in five years. Ai is thrilled to see that he has taken on a very angelic appearance during their time apart. However, one day he declares, "I will definitely make Ai mine," and forcibly kisses her! Being treated that way by someone three years her junior, whom she has always regarded as a younger brother, takes Ai by surprise. It would surely make Ai's heart skip a beat, wouldn't it?! Included one-shots: Gyakuten Barentain, Kimi ga Hajimete