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The Seven Knights of the Marronnier Kingdom

The television anime of Nao Iwamoto's The Seven Knights of the Marronnier Kingdom premieres October 3 on NHK Educational. A second trailer has confirmed the opening theme and five additional cast members.

Synthesized from 2 Yomimono stories · updated Sep 11

The television adaptation of Nao Iwamoto's The Seven Knights of the Marronnier Kingdom is set for an October 3 premiere on NHK Educational. The first promotional video and main visual arrived with the announcement, along with the voice cast for the seven knight brothers: Kengo Takanashi, Makoto Tanikawa, Haruki Ishiya, Satoshi Inomata, Kiyoto Mizuno, Taishi Murata, and Reiji Kawashima. Kiyoko Sayama directs at J.C. Staff.

A second trailer followed, and with it five more cast members: Miyuki Sakurai, Natsumi Fujiwara, Takehito Koyasu, Kazuyuki Okitsu, and Daisuke Namikawa. The same round of news named the opening song, "Sayonara wa Iwanai" by yama.

Across both stories the production has moved from a premiere date and full brother roster to a broader cast and a confirmed theme song. The network, the premiere date, the director, and the studio have stayed consistent in the coverage.

Key facts

Premiere date and network
October 3 on NHK Educational ↗
Director
Kiyoko Sayama ↗
Studio
J.C. Staff ↗
Source material
Nao Iwamoto's manga ↗
Seven brothers cast
Kengo Takanashi, Makoto Tanikawa, Haruki Ishiya, Satoshi Inomata, Kiyoto Mizuno, Taishi Murata, and Reiji Kawashima ↗
Opening song
"Sayonara wa Iwanai" by yama ↗
Additional cast
Miyuki Sakurai, Natsumi Fujiwara, Takehito Koyasu, Kazuyuki Okitsu, and Daisuke Namikawa ↗

Timeline

Synthesized by Yomimono from the cited Yomimono stories below, each itself sourced, then editorially reviewed. Every fact links the story it came from.

Facts

Release
tv · October 3 · NHK Educational · 2026-09-07
Release
tv · 2026-10-03 · JP · 2026-08-10
Announced
first promotional video, main visual, cast, and premiere date · 2026-08-10

Connections

Music by
yama

Structured graph also available as JSON at /public/entities/the-seven-knights-of-the-marronnier-kingdom. CC BY 4.0.

Claim activity

When a claim about The Seven Knights of the Marronnier Kingdom was confirmed, debunked, or disputed against open-web sources. The record stays even after a claim drops off the facts list.

  • Confirmed tv 2026-10-03 JP Sep 6 · source

All coverage

Sep 7

Seven Knights of the Marronnier Kingdom Anime Adds Cast, Opening Song

The television anime of Nao Iwamoto's The Seven Knights of the Marronnier Kingdom manga has revealed a second trailer, new cast members, and its opening theme. Miyuki Sakurai, Natsumi Fujiwara, Takehito Koyasu, Kazuyuki Okitsu, and Daisuke Namikawa join the cast, and yama performs the opening song "Sayonara wa Iwanai." The anime premieres on October 3.

Aug 10

Seven Knights of the Marronnier Kingdom Anime Casts Seven Brothers, Premieres October 3

The television anime of Nao Iwamoto's Marronnier Okoku no Shichinin no Kishi manga revealed its first promotional video, main visual, cast, and October 3 premiere on NHK Educational. Kengo Takanashi, Makoto Tanikawa, Haruki Ishiya, Satoshi Inomata, Kiyoto Mizuno, Taishi Murata, and Reiji Kawashima voice the seven knight brothers. Kiyoko Sayama directs at J.C. Staff.