Shinkan de Me wo Tsuketa Ko wa, Shiotaiou no Seme Joshi deshita.

A notorious playboy who has built his entire lifestyle around casually romancing women suddenly finds himself in an entirely unfamiliar position. Accustomed to being the one in control of every romantic encounter, he sets his sights on a younger woman, expecting another effortless conquest. However, his usual charm proves completely ineffective against her cold, dismissive demeanor. Rather than falling for his advances, she responds with a frosty and indifferent attitude that leaves him utterly disarmed. What follows is a complete subversion of his expectations, as this aloof young woman decisively takes the dominant role in their dynamic. There are no sudden shifts in power, no moments where he regains the upper hand, and no switching of positions between them. From their first encounter to the very end, she remains firmly in command, relentlessly teasing him while maintaining her detached composure. Stripped of his confidence and entirely at her mercy, the once-cocky womanizer is reduced to breathless moans and groans, thoroughly overwhelmed by the throes of passion under the absolute control of a girl who treats him with nothing but icy indifference.