I Switched Places with a Villainess, and Her Husband Won't Divorce Me!

Rin, an exhausted office worker, suddenly finds herself inside the world of a novel as the villainess Cathryn. Even worse, immediately after arriving, she is confronted by Cathryn's husband, the frontier lord Sven, who tells her that he wants a divorce. Rin retreats to Cathryn's room to calm down, where she discovers something completely unexpected: the mirror connects her world with the world she came from. Rin and Cathryn have actually switched places, allowing the two women to communicate with each other. While Cathryn begins enjoying life in modern Japan, Rin has to deal with the consequences of Cathryn's former behavior—and Sven gradually realizes that the woman in front of him is no longer the same person.