The ultimate tragedy that happened at an alumni association with a childhood friend's fiancé just before the wedding. Yakara, a former classmate who is jealous of the happiness of her old friend, forcibly drinks Tsukasa and replies in a mud state! The act escalated and finally it ended up being circled right next to the fiancée ... Tsukasa Aoi, who has fallen from the height of happiness to the bottom of her life, is the cruelest group criminal in history.