Hasekura Kohei has transferred school ten times. His new school, Shuchikan Academy, is on an island he lived on for a short period before when he was younger, Tamatsu Island. There awaited him the student council vice-president, Sendo Erika.

Shuchikan Academy's traditional opening ceremony. Kohei is surprised with the student council president's, Sendo Iori's, on-stage performance and the shouts from the students in the audience. The vice president follows and spills the beans on what happened the night before to the all the students, leading Kohei to become the center of attention during the following homeroom. Later, Shiro ends up asking Kohei to help find the escaped rabbit, Yukimaru...

Haruna, Kanade, and Erika, along with Shiro have fun in Kohei's room for a tea party. On their day off, all the tea party members go out on the town and shop, after which, they spend time at the seaside park. Erika suddenly warns Kohei to watch out for her brother. Once they get back to school, Iori tells Kohei to come to the Student Council Oversight room...

Just what happened yesterday?! Kohei wakes up, and his morning is no different than before. He sees Erika on the way to school and her smile makes him feel better, but just as that happens, Iori, the student council president, tells Kohei that he will serve as the person in charge for the school athletic meet.

It's finally time for the school athletic meet. Since Kohei was the lead of the meet, he was given the responsibility of leading the pledge of all the participants, but he gets nervous and completely forgets what to say. Iori helps him out by yelling "Mister Girl's Bath," which makes Kohei stops worrying and he does what he has to. After that, the athletic meet begins!

After school, Kohei sees Haruna putting up a poster for the school image committee. After hearing that the student council will be involved for the project, Kohei asks if he can help Haruna and they start working together. Kanade watches them from a distance, and she's happy Haruna looks like she's having so much fun, but starts to wonder about something...

It's a Sunday in June. Kohei and the treasurer, Seiichiro, are swamped with work to complete a plan laid out by the student council president, Iori, "Let's make the opening of the pool exciting." During which, Kohei becomes aware that it is Erika's birthday...

Erika wakes up in her room and is horrified as she remembers what happened last night and the fact that she wanted blood. Meanwhile, the student council, including Kohei, decide to keep watch during the night to figure out if the rumors about vampires going around school are true, but...

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