Haruo is a short geeky schoolboy with a whiny voice and glasses, and the only one in his family without magic powers. Therefore it should come as no surprise that his life is a constant struggle to prevent being ravished by any nearby female. When a witch under a curse named Mamiya enters the fray, Haruo's precious maidenhood that he holds onto so dearly is placed in grave danger. With the added risqué brought on by the arrival of this new number one contender, Haruo's struggle becomes even more desperate, and his hidden powers begin to awaken.