There's something just a little bit wrong about the obsessive way that Kei is crushing on her old friend Momo. Something downright paranormal. Yatsuki's got a crush on Momo himself, and he'll endure any punishment to protect her--but can he even survive a fight with someone as tough as Kei? This time, he might have bit off more than he can chew...and his friends just might find out the truth about yokai in the bargain.