Hitozuma Netori Kanrinin -Oshi ni Yowai Shukujo wa Shokuzai ni Ochiru | 人妻寝取り管理人～押しに弱い淑女は贖罪に堕ちる～

The protagonist of the story, "Seiji Suzuki," has been working as a live-in apartment manager for three years after losing a career battle and being laid off... One day, while working as a live-in janitor of an apartment building, he learns that his former colleague, Seitada Shiramizu, who had wronged him in the past is living there. The vengeful Seiji directs his anger at Seitadas wife, Kasumi.