Plot — What is Betrothed to My Sister's Ex about?
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!
Top Cast & Creator
▶ Betrothed to My Sister's Ex — Official Trailer
Streaming Availability
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Quick Facts
| Type | Web Series |
| First Aired | 2025 |
| Genre | Animation, Comedy, Drama |
| Language | Japanese |
| Seasons | 1 (12 episodes) |
| Audience Score | 80% (8.0/10, 32 votes) |
Betrothed to My Sister's Ex — FAQ
Is Betrothed to My Sister's Ex worth watching? Betrothed to My Sister's Ex holds a 8.0/10 rating from 32 viewers. 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
Who is in the cast of Betrothed to My Sister's Ex? It stars Rena Motomura, Daiki Hamano, Minami Tanaka, Ryohei Kimura, Yoko Hikasa, Sayaka Ohara and more.
Where can I stream Betrothed to My Sister's Ex? You can stream Betrothed to My Sister's Ex on Crunchyroll, Sony Liv, Crunchyroll Amazon Channel, Anime Times Amazon Channel. Availability may vary by region.
When did Betrothed to My Sister's Ex release? It first aired in 2025.
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