The anime adaptation of Nao Iwamoto's manga The Seven Knights of the Marronnier Kingdom is set for an October 2026 broadcast on NHK E-Tele, with worldwide streaming on Prime Video beginning October 4 at midnight Japan time and new episodes every Sunday. A new PV has revealed the opening theme and the voices of the seven brothers.
The Seven Knights of the Marronnier Kingdom is a manga by Nao Iwamoto that has run in Shogakukan's Monthly Flowers since 2016 and reached ten volumes as of the June 1 anime announcement. It ranked first in the women's category of Kono Manga ga Sugoi! 2018, and the anime adapts it around the tenth anniversary of its serialization. The story follows seven brothers who serve as knights and are sent as ambassadors from the Marronnier Kingdom, a nation at the center of eight countries, to seven different countries.
The television anime was announced on June 1 with a teaser visual and a special video, and it is scheduled to air on NHK E-Tele starting October 2026. Seiko Sayama, who directed To Your Eternity, directs the series. Shinzo Fujita handles series composition and script, Yuriko Maeda designs the characters, and J.C.STAFF produces the animation. The teaser visual shows the seven brothers walking on a grassland with marronnier flowers.
By early September, distribution plans had firmed up. Prime Video will stream the anime worldwide exclusively, beginning October 4 at midnight Japan time, with new episodes arriving every Sunday. A new PV revealed the opening theme, Sayonara wa Iwanai by yama, and presented the voices of the seven brothers. The broadcast slot on NHK's educational channel and the worldwide streaming placement are the two confirmed outlets.
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Prime Video will distribute the anime Seven Knights of the Marronnier Kingdom worldwide exclusively on its platform. Streaming begins October 4 at midnight Japan time, with new episodes every Sunday. A new PV reveals the opening theme Sayonara wa Iwanai by yama and showcases the voices of the seven brothers.
Nao Iwamoto's manga "The Seven Knights of the Marronnier Kingdom" will be adapted into a TV anime that airs on NHK E-Tele starting October 2026. The announcement was made on June 1 alongside a teaser visual and a special video. The manga has been serialized in Shogakukan's Monthly Flowers since 2016 and has ten volumes released as of June 1. It ranked first in the women's category of Kono Manga ga Sugoi! 2018. The story follows seven brothers who serve as knights and are dispatched as ambassadors to seven different countries from the Marronnier Kingdom, a nation at the center of eight countries. The anime marks the tenth anniversary of the manga's serialization. Seiko Sayama, director of To Your Eternity, is directing the series. Shinzo Fujita handles series composition and script, Yuriko Maeda designs the characters, and J.C.STAFF produces the animation. The teaser visual shows the seven brothers walking on a grassland with marronnier flowers. A special announcement video will be released on the anime's official website.