The trio of Aiko, Keiko, and Yuuko decide to befriend Nanami. This decision is made more beneficial after they discover that she is Touga's brother, whom they all have crushes on. But Nanami, ever protective of her brother, seems to find Keiko a threat, and finds ways to keep her away from Touga. Keiko has a hard time dealing with this; why should Nanami be the only one allowed close to him? But she knows that Touga will never notice her as she is; she needs to at least do something. She offers to let him under her umbrella in the rain, and who should see this but Nanami. Nanami cuts Keiko off from her, and refers to her as a "troublesome insect" that she never realized was so close to her. Keiko sees how cruel Nanami is, and goes to Nemuro Memorial Hall.