待望の声に応え帰ってきた！猟奇的なパワハラ上司の唯井さんは何故か金曜日だけ定時で帰る。ボクは知っている…唯井さんの夜の顔は真正M男様専用の罵倒風俗のNo.1嬢！日頃の鬱憤を晴らす為、童貞のボクは内緒で店へ行き唯井さんの弱みを握ろうとするが、唯井さんの罵倒とテクで快楽の波に呑み込まれてイク──

He's back by popular demand! Yui, the sadistic, abusive boss, inexplicably leaves work on time only on Fridays. I know why… Yui's nighttime persona is the No. 1 girl at a brothel catering exclusively to masochistic men! To release my pent-up frustrations, I, a virgin, secretly go to the club to try and find something to exploit about Yui, but I'm swept away by waves of pleasure by her insults and techniques—