The episode starts with Kohei Hasekura transferring into Shuchikan Academy located on Tamatsu Island due to family reasons. Arriving at school, he meets Sendo Erika, the student council vice-president, but is unable to shake her hand for some unknown reason. She then asks Hachimandaira Tsukasa to guide Kohei to the dorms. At the dorms he meets two of his childhood friends, revealing that he lived for a short time on the island seven years ago...