Forced to Play Along After Transmigrating to a Female-Dominant World

A modern-day office drone transmigrates to a matriarchal world. He thought he'd have women on both arms, but the System in his head hits him with a brutal truth: he's transmigrated into the good-for-nothing eldest daughter of a noble family from a novel. Worse still, the person he just knocked unconscious and dumped in an alley is the ultimate villain, who will one day shake the imperial court and tear him limb from limb. Right now, the villain is enduring humiliation while investigating a wrongful case involving the General's household. To stay alive, he clings to the villain's coattails, but the villain's gaze grows stranger by the day. His attempt to run away fails, and he's bound and taken into a little dark room. Just as he's about to accept his fate, he discovers that this "little dark room" isn't that kind of "little dark room"...