While Reina, Yuuma, and Mii are away at an amusement complex, Keidai collapses from a cold. As he recuperates, his friends come to visit with exception of Mii, causing him to miss her, and come face to face with his feelings for her yet again. Then, while searching for his runaway mother, he learns that Mii has a crush on someone and finds himself rather jealous of this unknown (to him at least) person. With these new feelings stirring within, Mii's childhood friend Kotomiya transfers back to their high school, and Keidai catches the two in an afterschool kiss.