Betrothed to My Sister's Ex
TV-142025•7.9/10
AnimationComedyDrama
Ratings
🎬TMDb
7.9/10(30)
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!
Production
LandQ Studios, Futabasha, NK Animation, MBS, Pierrot, Starry Cube, Bit grooove promotion
Language
JA
Status
Ended
First Aired
July 5, 2025
Last Aired
September 20, 2025
Networks
MBS, TBS, CBC
Trailers & Videos
Where to Watch
Region US · Lang EN
US
No providers available for this region.
Available in Your Library
Seasons & Episodes
Select a season to view episodes. Reddit links may contain spoilers.
Season
E1
I Could Never Replace My Sister
Air date: 2025-07-05
Marie is always dressed in tatters and is treated like a servant in her own home. Then she meets Count Kyros.
E2
Marie, I Want to Marry You
Air date: 2025-07-12
Kyros hates aristocratic society and its ties of obligation. But why? And what changed when he met Marie?
E3
A Life I Saw in a Dream, and a Dream-like Life
Air date: 2025-07-19
Marie begins her new life as Kyros' fiancée and finds herself bewildered by the differences from her old life.
E4
I've Found the Things I Like
Air date: 2025-07-26
Kyros wants to provide Marie with every comfort, but Mio cautions him. Then a package from the baron arrives.
E5
The Prince and the Pitch-Black Warrior
Air date: 2025-08-02
Luiphon takes Marie to a sword fighting contest. The ferocity of it scares her. Then the dark warrior fights.
E6
Am I Enough As I Am?
Air date: 2025-08-09
Liu Liu, Kyros' mother, discovers surprising things about Marie. Mio investigates the baron on Kyros' orders.
E7
You're So Close, I Think You May Make Me Dizzy
Air date: 2025-08-16
Mio investigates a comment in a letter from Marie's brother. Marie and Kyros go to the capital for a date.
E8
A Gift More Lovely Than Jewels
Air date: 2025-08-23
Kyros and Marie meet Luiphon at a jeweler's at his request. Thoughts of Anastasia haunt Marie's happiness.
E9
In Pursuit of Anastasia's Spirit
Air date: 2025-08-30
Kyros demands the truth of Anastasia's accident, but he and Marie are not prepared for the answers they find.
E10
Please Call Off the Betrothal
Air date: 2025-09-06
Worried, Kyros arranges to meet with Norman. But as Marie hears him describe his apprentice, her fears grow.
E11
The Empty Princess Lives
Air date: 2025-09-13
Marie's attacker talks about the past. Why did little Marie's life change so much? Why was she left in rags?
E12
It's Time to Settle This
Air date: 2025-09-20
Marie is determined to settle things. But even with everyone's help, how will she confront her parents?
Cast
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)
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