The anime has announced new cast members and revealed its opening song, set to premiere on October 3, 2026.
The anime adaptation of Nao Iwamoto's fantasy romance manga, The Seven Knights of the Marronnier Kingdom, has confirmed several exciting developments. On September 7, 2026, the project's official website unveiled additional cast members and premiered its second trailer, which also features the opening theme song titled "Sayonara wa Iwanai" performed by yama.
According to Anime News Network, the new announcements include notable voice actors such as Miyuki Sakurai, Natsumi Fujiwara, and Takehito Koyasu joining the existing cast. The expanded lineup aims to enhance the character-driven narrative that revolves around the seven brothers of the Marronnier Kingdom.
The second trailer not only offers an introduction to the newly announced characters but also provides a preview of the opening theme song. "Sayonara wa Iwanai" hints at emotional undertones that align with the series’ themes of romance and adventure. The anime is set to debut on October 3, 2026, airing on the NHK Educational channel at 6:25 p.m. JST (5:25 a.m. EDT).
Directed by Kiyoko Sayama, who has work credits on series like Skip Beat! and Vampire Knight, the production is in the hands of J.C. Staff. The script will be overseen by Shinzō Fujita, known for his work on To Your Eternity. Character design is managed by Yuriko Maeda, while Yoshiaki Fujisawa will compose the series’ music. Jin Aketagawa, recognized for his role as sound director on projects like Dr. Stone, rounds out a well-established creative team.
The narrative centers on seven brothers, each a knight serving the Marronnier Kingdom, who are dispatched as ambassadors to different kingdoms. Their mission: to seek out their fated partners. This storyline, grounded in themes of romance and adventure, aims to appeal to viewers who enjoy a mixture of fantasy and emotional storytelling. The manga originally launched in Shogakukan's Flowers magazine in 2016 and has enjoyed success, including a mention in Takarajimasha's Kono Manga ga Sugoi! guidebook as one of the best series for female readers in 2018.
The series’ potential popularity may be bolstered by its established fanbase from the original manga. Seven Seas Entertainment has released the manga in English, which allows wider accessibility for international viewers.
As the premiere date approaches, fans will be eager to see how the anime adaptation captures the essence of the original manga. With a talented cast and crew onboard, expectations will be high for a compelling representation of the beloved story. While detailed insights into the plot developments have not been disclosed, anticipation surrounding character dynamics and story evolution continues to build as the broadcast date nears.
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