Marry My Husband Japan S01E01 - Déjà vu 2015

While undergoing cancer treatment, Misa discovers her husband Tomoya is having an affair with her best friend Reina, only to be murdered by the two of them. Instead of dying, she somehow wakes up in 2015, ten years in the past. Armed with knowledge of what's to come, Misa sets out to rewrite her fate and plans her revenge.