The Gentlemen's Alliance cross / Tanemura, Arina

Learning the truth of her parentage and her adoption causes Haine to revert to her yanki ways, rejoining her gang and coming up with a plan to kidnap her mother from the Kamiya mansion, but the twins stand in her way.

Haine was sold to the Otomiya family and raised as one of them, attending the Imperial Academy, a private high school for rich kids. She is appointed to the student council, the president of which is Shizumasa Togu, whom Haine has loved since she was a child.