Betrothed to My Sister's Ex poster

Betrothed to My Sister's Ex (2025)

TV Series ★ 8.0

Animation Comedy Drama

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!

▶ Play

Episodes

Quick facts

Released
July 5, 2025
Rating
TV-14
IMDb
tt35652469
Country
Japan
Language
Japanese
Studio
LandQ Studios, Futabasha, NK Animation, MBS

Themes

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)

More Like This

More like Betrothed to My Sister's Ex ›
Beyond the Boundary: I'll Be Here – Future 2015 ★ 7.4
Eromanga Sensei 2017 ★ 5.9
Kakuriyo -Bed & Breakfast for Spirits- 2018 ★ 8.3
ORESUKI Are you the only one who loves me? 2019 ★ 8.5
Nina the Starry Bride 2024 ★ 8.4
My Happy Marriage 2023 ★ 8.3
Days with My Stepsister 2024 ★ 7.6
My Next Life as a Villainess: All Routes Lead to Doom! 2020 ★ 7.5
The Testament of Sister New Devil 2015 ★ 7.9
A Sister's All You Need 2017 ★ 7.6
Citrus 2018 ★ 6.6
The Quintessential Quintuplets 2019 ★ 8.4

Also Worth Watching

I Made Friends with the Second Prettiest Girl in My Class 2026
Honey and Clover 2005
Bibliophile Princess 2022
Makeine: Too Many Losing Heroines! 2024
7th Time Loop: The Villainess Enjoys a Carefree Life Married to Her Worst Enemy! 2024
May I Ask for One Final Thing? 2025
Marmalade Boy 1994
Toradora! 2008
Bakuman 2010
Kanon 2006
Horimiya: The Missing Pieces 2023
Maison Ikkoku 1986
Kokoro Connect 2012
My Teen Romantic Comedy SNAFU 2013
The Dangers in My Heart 2023
Kodocha 1996

Frequently asked questions

What is Betrothed to My Sister's Ex about?
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!
Who stars in Betrothed to My Sister's Ex?
Betrothed to My Sister's Ex stars Rena Motomura, Daiki Hamano, Minami Tanaka, Ryohei Kimura.
When was Betrothed to My Sister's Ex released?
Betrothed to My Sister's Ex is a 2025 animation, comedy, drama series.
Where can I watch Betrothed to My Sister's Ex?
You can watch Betrothed to My Sister's Ex with full details, cast, and streaming options on 3eyedraven.