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Betrothed to My Sister's Ex

2025 • 7.9 • Animation, Comedy, Drama •

JP • Japanese

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!

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)

Episodes

I Could Never Replace My Sister

E1 25m

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

Marie, I Want to Marry You

E2 25m

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

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

E3 25m

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

I've Found the Things I Like

E4 25m

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

The Prince and the Pitch-Black Warrior

E5 25m

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

Am I Enough As I Am?

E6 25m

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

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

E7 25m

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

A Gift More Lovely Than Jewels

E8 25m

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

In Pursuit of Anastasia's Spirit

E9 25m

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

Please Call Off the Betrothal

E10 25m

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

The Empty Princess Lives

E11 25m

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

It's Time to Settle This

E12 25m

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