In this premiere episode, young Naoto discovers the advantages of his preferences as Ayane, a voluptuous woman he has known since childhood, draws him into a close and passionate relationship. Complications arise when Chika, another busty friend from his youth, confesses that her charms are reserved solely for him. With both women vying for his attention, Naoto must confront the difficult decision between two equally appealing options. The episode explores the initial sparks of these connections and the beginning of his romantic dilemmas.