Nijisanji VTubers Voice New Roles in Netflix's The Ribbon Hero
This marks the first feature-length anime voice acting roles for three Nijisanji VTubers, signaling a continued crossover between the virtual liver industry and mainstream anime production.
Key Facts
- The Ribbon Hero, based on Osamu Tezuka's Ribbon no Kishi, streams worldwide on Netflix starting August 8, 2026.
- Mito Tsukino, Runrun, and Debidebi Debiru, all Nijisanji VTubers, voice roles in a feature-length animated work for the first time.
- The newly announced cast includes Yoshimasa Hosoya as Rock, Mito Tsukino as Hekate, Yusuke Tezuka as Chorogi, Runrun as Chick, and Debidebi Debiru as Tack.
- The film's teaser visual ranked first on Yahoo! Trends and third on X domestic trends, and it was screened at the Annecy International Animation Film Festival 2026.
- The film is directed by Yuki Igarashi, with character designs by Kei Mochizuki and animation production by OUTLINE.
Reporting from 5 sources: KAI-YOU, Denfaminicogamer, MoguLive, Anime Anime, and 1 more.
Twin Engine announced on July 30 that the Netflix film The Ribbon Hero, based on Osamu Tezuka's classic manga Ribbon no Kishi, has revealed additional cast members and a third trailer. The film, which streams worldwide on Netflix starting August 8, follows Princess Sapphire as she flees her destroyed homeland of Silverland and finds new companions in Goldland. The newly announced cast includes five companions who work with Sapphire at a mining site: Yoshimasa Hosoya as Rock, Mito Tsukino as Hekate, Yusuke Tezuka as Chorogi, Runrun as Chick, and Debidebi Debiru as Tack. Tsukino, Runrun, and Debidebi Debiru are VTubers from the Nijisanji group operated by ANYCOLOR Inc., and this marks the first time all three have voiced roles in a feature-length animated work. Tsukino said she felt the weight of the project but approached it sincerely, while Runrun and Debidebi Debiru, who play twins, described their first voice acting experience as nervous but enjoyable. The third trailer shows Sapphire transforming into the Ribbon Knight to confront the calamity Nergal, with the mysterious Velvet adding tension. The film is directed by Yuki Igarashi, with character designs by Kei Mochizuki and animation production by OUTLINE.
The third trailer for The Ribbon Hero depicts Sapphire, driven from her homeland, deepening bonds with her companions and confronting the calamity Nergal as the Ribbon Knight. After repeated invasions, people have given up resisting, but Sapphire refuses, crying out, 'No...! I won't let it end like this!' and dons a veil to transform. The trailer also features unsettling words from Velvet, voiced by Kouki Uchiyama, hinting at the story's conclusion.
The film has already generated buzz: its teaser visual ranked first on Yahoo! Trends and third on X domestic trends, and it was officially screened at the Annecy International Animation Film Festival 2026 in the Annecy Presents section. Director Yuki Igarashi, known for his solo key animation on the Jujutsu Kaisen Season 1 ending and the Star Wars: Visions episode 'The Duel,' makes his feature-length directorial debut. Character designs are by Kei Mochizuki, with Mai Yoneyama as assistant character designer. The theme song is 'Reborn' by Girls Archives.
Mito Tsukino, who plays Hekate, noted that a character with the same name and similar appearance appears in the original Ribbon no Kishi. Runrun and Debidebi Debiru, who play the twins Chick and Tack, are senior and junior in Nijisanji, and Runrun said it was an honor to play twins with her beloved senior.
Synthesized by Yomimono from the 5 cited sources below, including Japanese-language reporting where cited, then editorially reviewed before publishing.
Sources
- KAI-YOU にじさんじVTuber、Netflix『THE RIBBON HERO』で声優担当 月ノ美兎ら3名が出演
- Denfaminicogamer 『リボンの騎士』が原案のNetflix映画『リボンヒーロー』追加キャスト解禁。ヘケート役は「にじさんじ」月ノ美兎さん、第3弾予告も新たに公開
- MoguLive Netflix映画「THE RIBBON HERO リボンヒーロー」、月ノ美兎さん、るんるん、でびでび・でびるさんら追加キャスト発表
- Anime Anime 「にじさんじ」月ノ美兎＆ルンルン＆でびでび・でびる、“初”長編アニメ声優出演！「THE RIBBON HERO リボンヒーロー」
- PANORA Netflix映画「THE RIBBON HERO リボンヒーロー」に、にじさんじ 月ノ美兎、でびでび・でびる、ルンルンが声優として出演