Fuyuki is a high school student, living alone. One day, he accidentally calls a devil, Mel, to his apartment. She says, "Give me your life!", but he refuses it. As a result, they have a battle and he wins by chance. She accepts defeat and tells him she will make his wish come true. He says, "Well, I want you to make a girl I love love me." But she misunderstands it, "Make any girls who like Fuyuki love Fuyuki!" and casts a magic spell... On the next day, all girls seem different... They try to press themselves against him... They gather around him all the time... According to Mel, all girls like Fuyuki...? No way! Like this, his extraordinary school life starts....