[Kushikatsu Koumei] Choukyou no Susume -Majime Fuuki Iinchou no Mesu Doreika Keikaku-

A boy wakes up with the power to rewrite anyone's common sense through hypnotic suggestion, and his chosen experiment is Natsuki, the strict disciplinary chair whose rigid morals hide a repressed, big-breasted masochist. One whispered suggestion in an empty classroom and her barriers shatter one by one, the proud rule-enforcer reduced to ahegao-faced bliss as she cums over and over, begging for his cock and dreaming of dressing sluttier for him. By the final page she's on her knees calling him Master with cum on her face, happily agreeing to help enslave the rich, beautiful sisters she grew up with.