This story is about an elderly landlord who spent three years and 123 days taking advantage of the weaknesses of the female college student living next door, whom I had secretly kept an eye on, and completing my physical and mental training.

His boyfriend gets involved in a traffic accident, and Tsubaki's happy life in a cohabitation collapses... Her boyfriend is left out of temporary work, and Tsubaki is unable to pay the rent because she is looking for a job. The landlord, who had secretly kept an eye on Tsubaki since he first moved in, attacks Tsubaki, whom he invited to his house as a housekeeper. Tsubaki desperately resists, but he is a pervert who is persistently intertwined with an elderly landlord, and his body and mind fall into cum after being forced sex...