The Teen Exorcist, Vol. 3 (Manga)

Kikouden Shrine--where nightmares come to life...!It's not easy being a teen exorcist! From tracking down Qiongqi to preparing for the Kikouden Festival, Masahiro has way too much on his plate. Not even sleep brings peace, for his dreams are plagued by frightful memories from his childhood...Still, when Princess Akiko comes asking for help because a demon has been lurking outside her room every night, there's no way he can refuse her. But upon discovering the same demon is connected to his nightmares, Masahiro must now muster up his courage to confront his fears and save the princess!