Aika and Shinichi start living together and preparing for their upcoming wedding. The apartment manager comes to visit and seems like a nice person, so both of them feel at ease. One day, while Aika is dealing with the washing machine's water pipe, the manager visits her. He helps her fix the pipe and gives her some cakes as a housewarming gift. Without any suspicion, Aika eats some of the cakes. As she eats, she immediately feels dizzy and loses consciousness. When she wakes up, she finds the manager clinging onto her, his sweat soaking her body. Her body seems to have no strength left, and she is powerless as he takes advantage of her and ejaculates inside her. He captures this moment and uses it to threaten her, forcing her to serve him multiple times. But gradually, the sexual pleasure he brings surpasses his repulsiveness. She is slowly being conquered by him, and she even desires to satisfy him sexually even more...