Okusama no Kaifuku Jutsu The Animation + Episode 1

Shion, a young man unable to manifest his magical powers even after reaching adulthood, is taken care of by a family specialized in magical research. After finally unleashing his potential during a terrible incident, he is taken under the wing of an expert healer named Rui, who promises to teach him to control his powers. However, to properly master magic, a man needs a deep understanding of carnal matters.