DASS-992 Complete Defeat Older Sister. There’s no way I, a gentle powerhouse and former undefeated mixed martial arts champion, could lose to a skinny kid. Otsuki Hibiki

Hibiki Otsuki, a former martial arts champion now living as a full-time housewife, challenges Yuto, a neighborhood troublemaker who stays out late at night, saying that if she beats him in a martial arts match, he must do as she says. After losing the match, Yuto becomes frustrated and secretly gives Hibiki an intoxicating substance before challenging her to a rematch. Because of its effects, Hibiki cannot perform at her best and loses to Yuto. Hibiki challenges Yuto again, but he tells her that if she gives in, she will have to obey him. Overcome by the effects of the substance, Hibiki is left unable to resist and ends up under Yuto’s control.