Overview
Marie, the second daughter of a poor baron’s household, is treated like a servant by her parents. Even at Marie’s birthday party, her beautiful elder sister, Anastasia, is the star. Outside, Marie bumps into Count Kyuros Granado, who falls for her at first sight. Yet, due to a misunderstanding, the Count proposes to Anastasia. After a tragic accident, Marie must marry the count instead!
Seasons & Episodes
Season 1
Key Information
Watch Trailer
Cast & Crew
Rena Motomura
Marie (voice)
Daiki Hamano
Kyros (voice)
Minami Tanaka
Anastasia (voice)
Ryohei Kimura
Louisphon (voice)
Yoko Hikasa
Mio (voice)
Sayaka Ohara
Ryu Ryu (voice)
Tetsuya Kakihara
Toppo (voice)
Tatsuyuki Kobayashi
Thomas (voice)
Yuuka Aisaka
Tunica (voice)
Frequently Asked Questions
Marie, the second daughter of a poor baron’s household, is treated like a servant by her parents. Even at Marie’s birthday party, her beautiful elder sister, Anastasia, is the star....
Betrothed to My Sister's Ex has 1 season with 12 episodes.
Betrothed to My Sister's Ex premiered on July 5, 2025.
No, Betrothed to My Sister's Ex has ended. The final episode aired on September 20, 2025.
Betrothed to My Sister's Ex originally aired on MBS. Check your local streaming services for availability.
Betrothed to My Sister's Ex has a rating of 8.2/10 based on user reviews.
Betrothed to My Sister's Ex is classified as Animation, Comedy, Drama.