When Mikoto was a child, she was a little girl full of fantasy. Because of her wish, she was accepted by an angel, but was accidentally taken away by a trainee demon. In order to fulfill Mikoto's wish, the devil has been accompanying Mikoto since childhood until she was fourteen years old. Finally one day...
With a little confused devil Lu Lu, in order to realize Mikoto's wish, she came to Academy City. Can her wish come true?