Ah My Buddha

Ikkō Satonaka, a 16-year-old boy, is a first year trainee at the Saienji Buddhist Temple. He was sent there by his parents to be trained by his grandmother, the Saienji Priestess. At the temple he finds himself surrounded by beautiful female priestesses-in-training. Upon seeing a girl naked, Ikkō has the ability to turn into a super-monk, performing massive exorcisms for the good of the temple.

Synopsis from Anime News Network