Mesu Kyoushi 4: Kegasareta Kyoudan

Mesu Kyoushi 4 is a Japanese adult visual novel following a male protagonist enrolled at Seishu Academy, an elite international school. Sent by his uncle—the school's principal—with orders to sabotage the institution from within, the protagonist instead sees the opportunity to rebel against his manipulative family. He pursues a brutal campaign to corrupt and enslave the academy's female teachers through coercive sexual domination and impregnation, treating the school as a hunting ground for his revenge and gratification. The game plays as a non-linear corruption ADV where the player repeatedly engages the targets, gradually breaks their resistance through sexual training, and progresses toward enslaving them as personal possessions, with branching endings and harem scenarios.