サキュバス学園の犬ッ!! The Dog at Succubus High School (Succubus Gakuen no Inu!!)

Argumento

Average grades, average appearance. Inubou Ken who was average in just about everything, is transferred to an all-girl's school due to a mysterious conspiracy to teach the girls there about the opposite sex. In dreams, this is what they call a harem. However, all the girls there are succubus! Can Inubou guide them without incident while retaining his purity and righteousness?!