Oshioki: Gakuen Reijou Kousei Keikaku – Episode 3

Joutarou Shimohei is a teacher who transfers to an all-girls school mid-term, and with a reason. His job is to disciple the students who break the rules. Even if it means lecturing them sexually.

Alternative
Corrective Discipline – Oshioki: Gakuen Reijou Kousei Keikaku – 懲罰指導 ~学園令嬢更性計画~ 징벌지도 ~학원영애갱생계획~