In 2040, ShÅta Doi is tormented by the bully Takamatsu, his girlfriend Erika, and his gang, and his only allies are his sister Mayu and his teacher Yuzuki Hanyü. He contracts an illness and is frozen, growing resentful when his classmates do not care and walk out during his goodbye speech. Five years later, he is cured and revived by Karen Kamiya, who explains about the MK Virus and that Mayu went missing. He resumes class in his old school and reunites with Yuzuki, who seduces him. He starts to bond with other girls, but gets injured by a stray volleyball...