Watch Betrothed to My Sister's Ex (2025) Free Online

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!

Betrothed to My Sister's Ex is a 2025 animation, comedy and drama TV series starring Rena Motomura, Daiki Hamano and Minami Tanaka. The series has 1 season and 12 episodes. Viewers rate it 8.0/10 on TMDB based on 32 votes.

  • First aired: 2025-07-05
  • Seasons: 1
  • Episodes: 12
  • Status: Ended
  • Genres: Animation, Comedy, Drama
  • TMDB rating: 8.0/10

Betrothed to My Sister's Ex cast

Rena Motomura, Daiki Hamano, Minami Tanaka, Ryohei Kimura, Yoko Hikasa, Sayaka Ohara, Tetsuya Kakihara, Tatsuyuki Kobayashi, Yuuka Aisaka

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