Image: Anime „Marronnier Ōkoku no Shichinin no Kishi“: Hauptvisual
AMBot | 08/10/2026 | Reading Time: 3 Min.
The anime adaptation of Nao Iwamoto's fantasy romance "The Seven Knights of the Marronnier Kingdom" (original title: Marronnier Ōkoku no Shichinin no Kishi) will start airing on Japanese television on October 3, 2026. The broadcaster NHK E-Tele will show the series from then on Saturdays at 6:25 PM. On the occasion of the announcement of the date, those in charge released the first round of voice actor roles, a key visual showing the seven brothers against the backdrop of the kingdom, as well as the first promotional trailer.
The story takes place on a continent of eight realms. At the center lies the Kingdom of Marronnier, whose celebrated military commander Baribara sends her seven sons as envoys to the neighboring countries. There, the brothers are not only to solve diplomatic tasks but also to encounter their fate in love. Their shared ideal is: "One day, we'll save a princess in a cool way!" – a humorous and heartwarming adventure between romance and politics.
The title heroes bear telling names that describe their personalities: Kengo Takanashi voices Nemukunai, the eldest, who hardly sleeps and spends his nights reading. Makoto Tanikawa lends his voice to Hakuai, the philanthropist who approaches others with open affection. Haruki Ishiya can be heard as Atsugariya, who suffers from the heat, while Satoshi Inomata embodies Samugariya, the always freezing, gentle brother. Kiyoto Mizuno voices Kemonotsukai, who can communicate with animals, Taishi Murata the swordsman Kenjiman, and Reiji Kawashima the glutton Harapeko. The special feature of the family: Nemukunai and Hakuai are twins, as are Atsugariya and Samugariya, and the three youngest brothers are triplets. Their mother Baribara is voiced by Akeno Watanabe, and the narrator role is taken on by Show Hayami.
In the first trailer, you can see Baribara asking her sons about their big goal – the beginning of a story that takes place in several countries, each with its own culture. For the first time, the voices of the seven brothers, the mother, and the narrator can also be heard.
The studio J.C.Staff is responsible for the production. Direction is by Kiyoko Sayama, series composition and screenplay by Shinzo Fujita, and the characters are designed by Yuriko Maeda. Sound direction is by Jin Aketagawa, and the music is composed by Yoshiaki Fujisawa.
The source material has been published since September 2016 in Shogakukan's manga magazine Monthly Flowers; by June 2026, eleven volumes have been released. The series was ranked first in the female readership category of the "Kono Manga ga Sugoi!" list in 2018. The anime adaptation was announced in June 2026. In Japan, NHK offers the episodes simultaneously via the NHK ONE service and subsequently as a repeat.
In their statements, those involved showed enthusiasm: Takanashi called it an honor to be able to participate in Iwamoto's warm-hearted world, Watanabe joked that she had become the mother of seven sons overnight, and Hayami promised a narrative that would send the heart on a journey.
The story takes place on a continent of eight realms. At the center lies the Kingdom of Marronnier, whose celebrated military commander Baribara sends her seven sons as envoys to the neighboring countries. There, the brothers are not only to solve diplomatic tasks but also to encounter their fate in love. Their shared ideal is: "One day, we'll save a princess in a cool way!" – a humorous and heartwarming adventure between romance and politics.
The title heroes bear telling names that describe their personalities: Kengo Takanashi voices Nemukunai, the eldest, who hardly sleeps and spends his nights reading. Makoto Tanikawa lends his voice to Hakuai, the philanthropist who approaches others with open affection. Haruki Ishiya can be heard as Atsugariya, who suffers from the heat, while Satoshi Inomata embodies Samugariya, the always freezing, gentle brother. Kiyoto Mizuno voices Kemonotsukai, who can communicate with animals, Taishi Murata the swordsman Kenjiman, and Reiji Kawashima the glutton Harapeko. The special feature of the family: Nemukunai and Hakuai are twins, as are Atsugariya and Samugariya, and the three youngest brothers are triplets. Their mother Baribara is voiced by Akeno Watanabe, and the narrator role is taken on by Show Hayami.
In the first trailer, you can see Baribara asking her sons about their big goal – the beginning of a story that takes place in several countries, each with its own culture. For the first time, the voices of the seven brothers, the mother, and the narrator can also be heard.
The studio J.C.Staff is responsible for the production. Direction is by Kiyoko Sayama, series composition and screenplay by Shinzo Fujita, and the characters are designed by Yuriko Maeda. Sound direction is by Jin Aketagawa, and the music is composed by Yoshiaki Fujisawa.
The source material has been published since September 2016 in Shogakukan's manga magazine Monthly Flowers; by June 2026, eleven volumes have been released. The series was ranked first in the female readership category of the "Kono Manga ga Sugoi!" list in 2018. The anime adaptation was announced in June 2026. In Japan, NHK offers the episodes simultaneously via the NHK ONE service and subsequently as a repeat.
In their statements, those involved showed enthusiasm: Takanashi called it an honor to be able to participate in Iwamoto's warm-hearted world, Watanabe joked that she had become the mother of seven sons overnight, and Hayami promised a narrative that would send the heart on a journey.
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This article was originally published in German. It was translated with technical support and editorially reviewed before publication.
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