I, who usually plays the role of a background figure in the class, Kazuhiko Numizu, accidentally witnessed the scene of the popular female classmate Yana seeing Kyona being dumped by a boy. "He clearly said that he would marry me as his bride, isn't that too much?" "How long ago was that?" "About four or five years old." That doesn't count, right? With this as an opportunity, girls with a sense of defeat such as Shaoyan Lemon from the track and field team and Komari Chika from the literature club appeared one after another──? "Numizu, girls can be divided into two categories. If they are not childhood sweethearts, they are vixens." "I see, what a bold classification method."... I hope these girls who shine because of defeat can all be happy. The mysterious youth surrounded by defeated female characters──losers, is unveiled here!