After twelve captivating episodes filled with noble intrigue, family drama, and unexpected romance, the “Betrothed to My Sister’s Ex” anime has reached its heartwarming conclusion. Fans can rejoice as Marie and Kyuros finally tie the knot, a joyous moment beautifully captured in a brand-new key visual released to celebrate the finale. This stunning artwork perfectly encapsulates the happy ending for the beloved couple.
The anime series was brought to life by director Takayuki Kitagawa at LandQ studios, with Masakazu Sunagawa serving as assistant director. Kenta Ihara handled the series composition, while Akiko Sato designed the charming characters, and Kujira Yumemi composed the memorable music. The compelling story originated from the light novels by Tobirano and Mai Murasaki.
For those eager to dive deeper into the world of “Betrothed to My Sister’s Ex,” Chikage Nakagura’s manga adaptation is available digitally. Additionally, physical versions of both the light novel and manga are slated for release by Seven Seas Entertainment in January 2026.
The romantic fantasy follows Marie, the often-overlooked second daughter of a humble baron’s family, who endures harsh treatment from her parents while her elder sister, Anastasia, basks in the spotlight. Marie’s life takes an unexpected turn when she encounters the charming Count Kyuros Granado, who is instantly smitten with her. However, a misunderstanding leads Kyuros to propose to Anastasia. Fate intervenes after a tragic accident, ultimately leading Marie to become the Count’s bride. The series beautifully explores their evolving relationship amidst societal pressures and personal growth.