Kenka Banchou Otome - Koi No Battle Royale

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