Possession Drop

An Inherent Drop (憑き物落とし,) or Exorcism is the ability of Natsuhiko Kyōgoku.

Description
Kyōgoku's ability allows him to possess someone by dropping a yōkai from the sky to possess the target chosen by Kyōgoku in order to cause havoc. Since the yōkai possessing the targets are chosen at random, the Ability can miss, and in the case of a miss, a "" (文庫本) will fall on the target instead of a yōkai.

Moreover, his "spirit possession" can't deal with physical damage. The demon is only visible to the victim and may cause discomfort and confusion.