On Monday, Kaori Fujimiya rejects Yuki Hase's proposal of friendship. Feeling disheartened, Yuki's friend Shogo Kiryu advises him to ask Kaori for the reason that they can't be friends. However, when he tries doing so, Kaori feigns illness and avoids him. On Tuesday, Yuki goes to the rooftop and sits down to lunch with Kaori, where she explicitly says that she cannot have any friends...