Phantom Busters, Vol. 5 -

Straight A student Eugene Korekishi doesn't believe in ghosts...but his classmate Mogari Shishikuno is an exorcist who swallows them whole! Mogari can't see ghosts on his own, but once he and Eugene meet someone with the sight, there's only one path left--form an exorcist club at school and embark on anything but a normal high school life!

The gang is approached by super-stud sorcerer Botan Kadenokoji, and he does not come in peace! After Botan makes Mogari absorb a huge number of vengeful spirits into his body, the spirits latch on to the darkness in Mogari's heart and past...