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Betrothed to My Sister's Ex

Betrothed to My Sister's Ex

Betrothed to My Sister's Ex

★ 8.1•2025•1 Seasons•ANIME

AnimationComedyDrama

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!

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Top Cast

Rena Motomura

Rena Motomura

Marie (voice)

Daiki Hamano

Daiki Hamano

Kyros (voice)

Minami Tanaka

Minami Tanaka

Anastasia (voice)

Ryohei Kimura

Ryohei Kimura

Louisphon (voice)

Yoko Hikasa

Yoko Hikasa

Mio (voice)

Sayaka Ohara

Sayaka Ohara

Ryu Ryu (voice)

Tetsuya Kakihara

Tetsuya Kakihara

Toppo (voice)

Tatsuyuki Kobayashi

Tatsuyuki Kobayashi

Thomas (voice)

Yuuka Aisaka

Yuuka Aisaka

Tunica (voice)

Episodes

Season:

I Could Never Replace My Sister

1. I Could Never Replace My Sister

Marie is always dressed in tatters and is treated like a servant in her own home. Then she meets Count Kyros.

Aired: 7/5/2025

Marie, I Want to Marry You

2. Marie, I Want to Marry You

Kyros hates aristocratic society and its ties of obligation. But why? And what changed when he met Marie?

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Reviews (0)

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Aired: 7/12/2025

A Life I Saw in a Dream, and a Dream-like Life

3. A Life I Saw in a Dream, and a Dream-like Life

Marie begins her new life as Kyros' fiancée and finds herself bewildered by the differences from her old life.

Aired: 7/19/2025

I've Found the Things I Like

4. I've Found the Things I Like

Kyros wants to provide Marie with every comfort, but Mio cautions him. Then a package from the baron arrives.

Aired: 7/26/2025

The Prince and the Pitch-Black Warrior

5. The Prince and the Pitch-Black Warrior

Luiphon takes Marie to a sword fighting contest. The ferocity of it scares her. Then the dark warrior fights.

Aired: 8/2/2025

Am I Enough As I Am?

6. Am I Enough As I Am?

Liu Liu, Kyros' mother, discovers surprising things about Marie. Mio investigates the baron on Kyros' orders.

Aired: 8/9/2025

You're So Close, I Think You May Make Me Dizzy

7. You're So Close, I Think You May Make Me Dizzy

Mio investigates a comment in a letter from Marie's brother. Marie and Kyros go to the capital for a date.

Aired: 8/16/2025

A Gift More Lovely Than Jewels

8. A Gift More Lovely Than Jewels

Kyros and Marie meet Luiphon at a jeweler's at his request. Thoughts of Anastasia haunt Marie's happiness.

Aired: 8/23/2025

In Pursuit of Anastasia's Spirit

9. In Pursuit of Anastasia's Spirit

Kyros demands the truth of Anastasia's accident, but he and Marie are not prepared for the answers they find.

Aired: 8/30/2025

Please Call Off the Betrothal

10. Please Call Off the Betrothal

Worried, Kyros arranges to meet with Norman. But as Marie hears him describe his apprentice, her fears grow.

Aired: 9/6/2025

The Empty Princess Lives

11. The Empty Princess Lives

Marie's attacker talks about the past. Why did little Marie's life change so much? Why was she left in rags?

Aired: 9/13/2025

It's Time to Settle This

12. It's Time to Settle This

Marie is determined to settle things. But even with everyone's help, how will she confront her parents?

Aired: 9/20/2025