After being rejected by Minase-senpai, Chitose reveals she has stolen his phone and discovered a compromising photo. Using the image as blackmail, she lures him to her room to establish a dominant, master-servant dynamic. As Minase reveals a traumatic past of abuse by his sister, he finds an unexpected liberation in Chitose's control, leading the two into a twisted and passionate new relationship.
Minato confesses his love to the sadistic Chitose, who agrees to date him on the condition that he becomes her obedient "dog." To test his submission, she forces him to watch as she engages in sexual acts with strangers. Through a series of humiliating trials and emotional manipulation, Minato's masochism is revealed, ultimately cementing his place as Chitose's plaything.