The Night Beyond the Tricornered Window, Vol. 2 (Yaoi Manga)

When exorcist Hiyakawa and his assistant, Mikado, discover the remains of a curse at a murder scene, the only clue they have to the caster’s identity is the name “Erika Hiura.” Later, while investigating an incident at a girls’ school, they finally come face-to-face with their mysterious quarry. Although Hiyakawa is stunned to find that Erika is just a high-school student, he’s even more disturbed by the instant, powerful attraction felt between Erika and Mikado—a bond he’s determined to break, at any cost. -- VIZ Media