Osomatsu-kun

The Tomboy Princess of Dekapan Castle!

Iyamitarou, the scheming minister of Emperor Dekapan, attempts to assassinate ruling Princess Totoko so that his next-in-line Prince Hatabou can ursurp her. Under the guise of a competition for someone to protect her, a kidnapping plan unfolds, but would someone like Princess Totoko need a guard?