Betrothed to My Sister's Ex(2025)
Betrothed to My Sister's Ex Synopsis
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!
Betrothed to My Sister's Ex (2025) is a animation, comedy and drama series that premiered on July 5, 2025, spanning 1 season and 12 episodes. It stars Rena Motomura, Daiki Hamano, Minami Tanaka and Ryohei Kimura. Viewers rate it 8.0 out of 10 across 32 ratings.
- First aired:
- 2025-07-05
- Last aired:
- 2025-09-20
Betrothed to My Sister's Ex (2025) Trailer
Watch the official trailer for Betrothed to My Sister's Ex before you start streaming.
Betrothed to My Sister's Ex Cast & Crew
Main cast
Rena Motomura
as Marie (voice)
Daiki Hamano
as Kyros (voice)
Minami Tanaka
as Anastasia (voice)
Ryohei Kimura
as Louisphon (voice)
Yoko Hikasa
as Mio (voice)
Sayaka Ohara
as Ryu Ryu (voice)
Tetsuya Kakihara
as Toppo (voice)
Tatsuyuki Kobayashi
as Thomas (voice)
Yuuka Aisaka
as Tunica (voice)
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Betrothed to My Sister's Ex Reviews & Ratings
Average viewer score of 8.0/10 from 32 ratings.
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Betrothed to My Sister's Ex – Frequently Asked Questions
Where can I stream Betrothed to My Sister's Ex?
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Betrothed to My Sister's Ex (2025) is available to stream on Crunchyroll and Crunchyroll Amazon Channel, with episodes also available to buy from Amazon Video and Apple TV Store. Availability comes from JustWatch data and varies by country.
How many seasons of Betrothed to My Sister's Ex are there?
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Betrothed to My Sister's Ex has 1 season and 12 episodes in total, starting from its premiere on July 5, 2025.
Is Betrothed to My Sister's Ex still running?
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No. Betrothed to My Sister's Ex is marked as ended, with the final episode airing on September 20, 2025.
Who is in the cast of Betrothed to My Sister's Ex?
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Betrothed to My Sister's Ex (2025) stars Rena Motomura, Daiki Hamano, Minami Tanaka, Ryohei Kimura and Yoko Hikasa. The full cast list with character names is available in the cast section of this page.
Is Betrothed to My Sister's Ex any good?
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Betrothed to My Sister's Ex (2025) is rated 8.0 out of 10 from 32 viewer votes, and suits viewers who like animation, comedy and drama series. Reviews from viewers are collected further down this page.
Where can I watch the Betrothed to My Sister's Ex trailer?
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The official Betrothed to My Sister's Ex trailer is embedded in the trailer section of this page and plays instantly in your browser.