As a first-year college entrance exam retake student, I decided to stay with my aunt Miki in order to attend a prep school in Tokyo. I'm grateful that she allowed me to stay with her, but to be honest, I don't really like Miki. She makes condescending remarks, posts flashy social media posts, and even has a free-spirited sex life... She leaves the housework to her husband and does as she pleases. What's more, she calls me an unpopular virgin. Unable to bear it any longer, I started following Miki to find out her weaknesses. When I saw her disappear into a hotel with a certain man, I came up with a certain plan...