Amaenaide yo!!

Satonaka Ikkou, 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, Ikko has the ability to turn into a super-monk, performing massive exorcisms for the good of the temple.

(Source: Anime News Network)