Betrothed to My Sister’s Ex First Trailer Released

The newly released official website for the romcom anime Betrothed to My Sister’s Ex has released the first promotional video showcasing a July 2025 release date.

The character visuals and cast for the two main characters have been released:

• Hamano Daiki as Cyrus
• Motomura Rena as Marie

Cast Messages:

• Hamano Daiki:

“The main characters are so lovable that you’ll want to root for them all the time… You won’t be able to take your eyes off the relationship between the two characters, who are connected by their souls. It’s not a typical boy-meets-girl story at all. It’s a work that is filled with exciting scenes amidst the romance. I’m looking forward to playing Cyrus, who is straightforward and clumsy, but cares for people from the bottom of his heart.”

• Motomura Rena:

“After reading the original work, I couldn’t take my eyes off the love story between Marie and Cyrus, the sudden comical and serious developments with the quirky characters, and the suspense and thrills! I think Marie is a girl with a lot of hidden charm. Once you remove the veil of her tatteredness, her strength and toughness are as beautiful as a jewel. I am very happy to be able to play Marie. After meeting Cyrus, Marie’s once monochrome world changes drastically. I will do my best to act so that I can share that moment with everyone. Thank you very much.”

Congratulatory messages from the original author Tobirano and illustrator Murasaki Mai have been shared, Murasaki Mai also shared a celebratory illustration.

• Tobirano (Original Author):

“This is Tobirano, the original author. Betrothed to My Sister’s Ex has finally been made into an anime! What a surprise! To me, this feels like a true fantasy, and I still feel like I’m in a dream. Granado Castle, Originally just words on the web, has now been given colour, and Marie, Cyrus, and the other characters are speaking and moving on TV. I hope that viewers will enjoy this magical reality.”

• Murasaki Mai (Illustrator):

“I’m very grateful and happy that I’ll be able to experience the world of Betrothed to My Sister’s Ex in anime form. I’m excited to see what kind of music they’ll use, and what kind of voices they’ll use when speaking and moving… I’m really looking forward to it.”

The first key visual was also unveiled.

About Betrothed to My Sister’s Ex:
Marie, the second daughter of a poor baron, wears tattered clothes and is treated like a servant by her parents. But she still has an honest and kind heart and is devoted to her family.
One day, a birthday party is held for Marie. However, the star of the party is her princess-like older sister, Anastasia. Marie, standing sadly outside the party, happens to bump into the wealthy Count Cyrus Granado.
They are attracted to each other, and Count Granado falls in love with Marie at first sight, but due to a misunderstanding, he proposes to Anastasia instead of Marie!
The engagement between Count Granado and his sister progresses rapidly. However, Anastasia dies in an accident, and Marie ends up marrying into the Count’s family instead…!?
The Cinderella story of the “ragged young lady” that began with a misunderstanding begins!
[Rewritten from official website]