shidou mariya

The primary antagonist of Maria Holic.

He is a cross-dresser who attends a girls-only Catholic school in order to win a competition against his twin sister, Shidou Shizu, for chairmanship of the family-owned schools. He frequently mistreats the main character, Miyamae Kanako, using her secret lesbianism and his popularity to pay her back for discovering his cross-dressing secret.