For as long as she's been aware, the heroine, without a single relative, lived under care of the state. Both of her parents' faces were unknown to her.<br /><br />In front of this heroine, a young boy appeared.<br /><br />The young boy's name was "Hikaru". It appeared that he was the heroine's twin brother, separated at birth. He had a proposal for the heroine.<br /><br />"Could you go to school in my place?"<br /><br />The heroine was shocked by this crazy suggestion.<br /><br />Furthermore this was an all-boys school. The only high school in this prefecture for delinquents.