She is a freshman girl whose hobby is making jokes and causing trouble. Due to a strange encounter, she decided to become his mistress. Her motive for becoming a mistress is absolutely unparalleled and pure, because he is so handsome! ! But why didn't anyone tell her that his wife turned out to be so beautiful and noble that even she couldn't help but like her? And the most intolerable thing was that they were so deeply in love that there was no room for her in the middle...