During my first year preparing to retake university entrance exams, I move in with my aunt Miki so I can attend a prep school in Tokyo. I appreciate having a place to stay, but I cannot stand her condescending attitude, flashy social media life, or carefree affairs while her husband handles the housework. When she mocks me as an unpopular virgin, I decide I have had enough. I follow her to uncover something I can use against her, see her disappear into a hotel with another man, and devise a plan to turn the tables on her.