Betrothed to My Sister's Ex: Marie and Kyros Embrace 'Happily Ever After' in Grand Finale Key Visual

The highly anticipated josei romance, Betrothed to My Sister's Ex, has drawn its captivating narrative to a close with its 12th and final episode, which aired on September 19, 2025. Fans are abuzz as LandQ Studios, the creative force behind this acclaimed adaptation of Tobirano’s light novel, unveiled a breathtaking new key visual celebrating the protagonists, Marie and Kyros, in their triumphant 'happily ever after.'

The series, which captivated audiences since its July 4 premiere, masterfully chronicled the intricate evolution of Marie and Kyros’s relationship. Thrust into an arranged marriage as a stand-in for her late sister Anastasia, Marie grappled with profound feelings of inadequacy and bewilderment amidst the unexpected proposal. Yet, the narrative skillfully pivoted as Kyros, a noble by birth but disdainful of aristocratic strictures, found himself irresistibly drawn to Marie's genuine spirit and unwavering authenticity.

Their bond deepened through a series of pivotal events, perhaps most notably a thrilling swordsmanship competition where Kyros’s hidden prowess and compassionate nature shone brightly, allowing Marie to see beyond the superficial demands of courtly life. The emotional crescendo arrived in a dramatic duel: Kyros valiantly defeated the rival noble, Luiphon, to fiercely defend Marie’s honor, culminating in a resounding public declaration of their engagement that stirred the entire kingdom. This moment, met with an outpouring of cheers from the audience, symbolized Marie’s profound acceptance and burgeoning self-confidence.

The concluding episodes meticulously explored the deepening emotional intimacy between the couple, culminating in a tender, impulsive kiss from Marie to Kyros, unequivocally sealing their profound affection. The newly released key visual perfectly encapsulates this journey, transitioning from initial misunderstandings and societal pressures to a bond forged in authentic love and unwavering partnership.

Betrothed to My Sister's Ex is lauded for its exquisite blend of romantic comedy and aristocratic drama, propelled by exceptional character development and a meticulously crafted world that brilliantly navigates the complexities of noble existence and personal identity. It stands as a testament to heartfelt storytelling, nuanced portrayals, and a deeply satisfying resolution that continues to resonate powerfully with enthusiasts of josei romance.