Shy Kayano finally works up enough courage to confess her feelings to the handsome Kamijo in a love letter. When the letter is intercepted by the notorious Edogawa Takeru—the devilishly handsome son of the school's principal—she is appalled, but even worse is her mother's engagement—to principal Edogawa! Now Kayano will have to live with this devil Takeru 24/7! How will she cope with this "living hell"? Age 13 and up.