Human Observation: Unable to escape easily accepted male-female relationships! A busty girl, subdued by a rotten man's S-class techniques, becomes a servant slave. GRMO-218

Late at night, she went to a man's house and found a woman with an ordinary appearance but a large bust. She heard that this man was her ex-boyfriend, and that he was ending their relationship that day, apparently to retrieve some belongings he had left there. However, this scumbag man, who had tamed many women, wasn't about to easily give up those precious breasts… He relentlessly subjected the woman to S-level manipulation, making her addicted and forcing her to retract her promise, finally succeeding.