Eimi, a contract employee at a temp agency, is renewing her contract at the Tokyo branch, which has a lot of work, so she is living with her sister and her husband for a while in their apartment. In order not to make her brother-in-law Takayuki feel uncomfortable, Eimi behaves as if she were at home. Even though she is her sister-in-law, she is a mature adult woman. Takayuki is no longer able to control his urges as a man. He threatens Eimi with embarrassing photos he secretly took...