Upon his admission to Mihama Academy, transfer student Yuuji Kazami aspires to live a conventional high school life. However, this seems unlikely as the Academy is vastly different from its conventional counterparts. The Academy only comprises the principal and five girls, and it falls upon Yuuji to get to know them. Despite their tendency to keep their pasts hidden, Yuuji gradually uncovers their painful pasts, and all of the girls have suffered their own traumatic experiences. They form a unique family, and Yuuji is determined to help each of them. Yet, can he save these girls when he is unable to save himself?