The highschool student Miu Sakurai has the toughest luck. She's much Older Than They Look and has the biggest crush on Shion Amamiya, the resident hottie, so she believes that her underdeveloped physique keeps her from being noticed by him. She decides to try getting him by other methods... like Black Magic. Sure, maybe reading the old spellbook she found in a book-store will work, she has nothing to lose anyway.