Kazuhito learns from Yayoi, the younger sister of the cashier of Honda Booksellers, Sakura, that they might be leaving the city. In her apartment, Kazuhito shares to Kirihime the story of his first visit to the said bookstore which eventually ends in Kazuhito being tormented by Kirihime for calling her flat-chested numerous times while she was asleep. Back in the bookstore, Yayoi storms off with Kazuhito where he learns that the bookstore is indeed closing. In hopes of saving the bookstore, Yayoi and Kazuhito publicize the bookstore around the area whilst stumbling on Maxi. Later, while trying to cheer up a weeping Yayoi, Kirihime arrives and after threatening Kazuhito, tells Yayoi to head home which the latter denies, fearing her sister will hate her. But nonetheless, Yayoi returns to the bookstore and apologizes to her sister. Sakura then denies the fact that their store is closing as Yayoi misinterpreted it due to seeing her parents fighting frequently. After Sakura reassures Yayoi that they won't get separated, Kazuhito felt grateful for Kirihime for adopting him which is immediately shattered when Kirihime again teases Kazuhito into punishing him.