6, life is carefully choreographed. School, study, and the occasional visit with his friend and classmate Safu. One fateful day, however, he takes a misstep, sheltering an injured boy his age from a typhoon. Known only as Rat, this boy is a VC – a fugitive living outside the computerized tapestry of city control – and helping him will throw Shion’s life into chaos and start him down a path to discovering the appalling secrets behind the superficial perfection of No. 6.

    Yukihiro,the illegitimate son, never allowed himself to ask for anything. Kazuma is the only one that Yukihiro wants to protect even though the burden that Kazuma carries is too dangerous. What should they do?

    He fell in love at first sight, and continued to hold those feelings secretly since then. But that means nothing, for this love is not to be allowed. One night, Keiichirou hugged Yuki and said "Stay with me"! Since his sister’s death, the dangerous balance between them finally starts to crumble!?