Akari and her boyfriend move to a new apartment and start their lives together. While preparing to enter the house, she saw the neighbor. He wanted to ask for her contact information and seemed to want to flirt with her. Her boyfriend caught him and scolded him. Unbeknownst to the two, he could use the "mind-body transfer technique", allowing him to switch souls with anyone he wanted. He used this technique on Akari to explore her beautiful body. Using her body to make love to his body, recording a video of her having sex with him to threaten Akari. After getting bored with his own old body, he used Akari's body to have sex with her boyfriend...