It has been one year since Tsukune entered Youkai School. After spring break, Tsukune hurries to school to reunite with Moka-san only to collide with a mysterious girl on a bicycle who was also extremely cute. In school, Moka and friends were quickly surrounded with fuss by the new students. In addition, a large amount of fan mail was found in the shoe cabinet of Moka which came from the new students who also adores her, but there was one special letter. A dangerous threatening letter that said, "I’m taking your life."