Betrothed to My Sister's Ex(2025)

Name: Betrothed to My Sister's Ex
Genre: Animation, Comedy, Drama
Released: 2025-07-05
Rating: 7.9
Cast: Rena Motomura, Daiki Hamano, Minami Tanaka, Ryohei Kimura, Yoko Hikasa

★ 7.9(30)12 episodesEnded

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!

First aired:: 2025-07-05
Country:: JP
Network:: MBS, TBS, CBC

Episodes

Season 1(12)

1. I Could Never Replace My Sister
★ 8.0
2025-07-05 · 25m
Marie is always dressed in tatters and is treated like a servant in her own home. Then she meets Count Kyros.
2. Marie, I Want to Marry You
★ 7.5
2025-07-12 · 25m
Kyros hates aristocratic society and its ties of obligation. But why? And what changed when he met Marie?
3. A Life I Saw in a Dream, and a Dream-like Life
★ 7.0
2025-07-19 · 25m
Marie begins her new life as Kyros' fiancée and finds herself bewildered by the differences from her old life.
4. I've Found the Things I Like
★ 7.0
2025-07-26 · 25m
Kyros wants to provide Marie with every comfort, but Mio cautions him. Then a package from the baron arrives.
5. The Prince and the Pitch-Black Warrior
★ 7.0
2025-08-02 · 25m
Luiphon takes Marie to a sword fighting contest. The ferocity of it scares her. Then the dark warrior fights.
6. Am I Enough As I Am?
★ 8.0
2025-08-09 · 25m
Liu Liu, Kyros' mother, discovers surprising things about Marie. Mio investigates the baron on Kyros' orders.
7. You're So Close, I Think You May Make Me Dizzy
★ 7.0
2025-08-16 · 25m
Mio investigates a comment in a letter from Marie's brother. Marie and Kyros go to the capital for a date.
8. A Gift More Lovely Than Jewels
★ 7.0
2025-08-23 · 25m
Kyros and Marie meet Luiphon at a jeweler's at his request. Thoughts of Anastasia haunt Marie's happiness.
9. In Pursuit of Anastasia's Spirit
★ 7.0
2025-08-30 · 25m
Kyros demands the truth of Anastasia's accident, but he and Marie are not prepared for the answers they find.
10. Please Call Off the Betrothal
★ 6.0
2025-09-06 · 25m
Worried, Kyros arranges to meet with Norman. But as Marie hears him describe his apprentice, her fears grow.
11. The Empty Princess Lives
★ 6.0
2025-09-13 · 25m
Marie's attacker talks about the past. Why did little Marie's life change so much? Why was she left in rags?
12. It's Time to Settle This
★ 6.0
2025-09-20 · 25m
Marie is determined to settle things. But even with everyone's help, how will she confront her parents?