Someone confesses to Erika but she refuses. Erika's birthday is today. Erika helps Kohei for upcoming swimming pool event then Kohei gives her a present (flowers) which surprises her. At her room, Erika's heart is pounding. At the swimming pool event, Erika gives Kohei a sandwhich for lunch and also puts Yakiso on it. As the event ends, Kohei asks Erika to have a swim race and they also nearly end up kissing but then Erika feels her heart pounding again. And it's revealed that she wants blood (Possibly Kohei's).