The Ribbon Hero, a feature-length anime film based on Osamu Tezuka's Ribbon no Kishi, is set to premiere globally on Netflix on August 8, 2026. The film has revealed its full cast and theme song, and is directed by Yuki Igarashi with animation by Studio OUTLINE.
The Ribbon Hero is a feature-length anime film adapting Osamu Tezuka's classic manga Ribbon no Kishi. The story follows Princess Sapphire as she flees her destroyed homeland of Silverland and finds new companions in Goldland. The film is directed by Yuki Igarashi, with original character designs by Kei Mochizuki and character design cooperation by Mai Yoneyama. Production is by Twin Engine, with animation by Studio OUTLINE.
The cast has grown across two trailer reveals. Sapphire is voiced by Saya of the comedy duo Lalande. The second trailer added Seiran Kobayashi as Pine, a friend of Sapphire; Kouki Uchiyama as Velvet, an executive of the religious organization Mitra; and Mayumi Shintani as Zircon, Sapphire's elderly attendant. The third trailer added 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.
Three of the new cast members, Tsukino, Runrun, and Debidebi Debiru, are VTubers from the Nijisanji group operated by ANYCOLOR Inc. This marks the first time all three have voiced roles in a feature-length animated work. The theme song "Reborn" is performed by the pre-debut Japan-Korea girl group Girls Archives. The film has been selected for an official screening at the Annecy International Animated Film Festival.
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The Netflix film THE RIBBON HERO, based on Osamu Tezuka's classic manga Ribbon no Kishi, began streaming on August 8. Yuki Igarashi directs the feature, his first feature-length directorial work, with character design by Kei Mochizuki and animation production by OUTLINE. The story follows princess Sapphire, who takes up a sword when the calamity Nergal returns to threaten her new home.
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 second trailer for the feature-length anime film "The Ribbon Hero," based on Osamu Tezuka's "Princess Knight," was released on June 23, 2026. The trailer reveals three new cast members: Seiran Kobayashi as Pine, a friend of protagonist Sapphire; Kouki Uchiyama as Velvet, an executive of the religious organization Mitra; and Mayumi Shintani as Zircon, Sapphire's elderly attendant. The theme song "Reborn" is performed by the pre-debut Japan-Korea girl group Girls Archives. The trailer opens with a scene of a country destroyed by the calamity Nergal and includes action sequences, a sword fight, and a transformation scene. Sapphire is voiced by Saya of the comedy duo Lalande. The film is directed by Yuki Igarashi, with original character designs by Kei Mochizuki and character design cooperation by Mai Yoneyama. Production is by Twin Engine, with animation by Studio OUTLINE. "The Ribbon Hero" will premiere globally on Netflix on August 8, 2026. The film has also been selected for an official screening at the Annecy International Animated Film Festival.