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THE RIBBON HERO Anime Film Inspired by Osamu Tezuka's Princess Knight Premieres August 8 on Netflix

Netflix has announced that THE RIBBON HERO, an original anime feature film inspired by Osamu Tezuka's classic manga Princess Knight, will launch globally on August 8, 2025. The film follows protagonist Sapphire as she overcomes loss and trauma to protect those she loves, with Japanese comedian and personality Saya of the duo Laland voicing Sapphire. A main visual and first teaser trailer have been released alongside the announcement.

First seen May 26 ago14 sources covering

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JP-PRESS (7)

How sources are framing this

One French source (Catsuka) listed the release date as August 9 rather than August 8, which all other sources confirmed.

What we know

  • THE RIBBON HERO is an anime feature film inspired by Osamu Tezuka's Princess Knight, premiering exclusively on Netflix worldwide on August 8
  • Saya (of comedy duo Laland) voices the lead character Sapphire, marking a notable casting choice outside traditional voice-actor circles
  • A main visual and first teaser trailer have been released, including an initial reveal of Sapphire's transformation scene
  • The film is directed by Yuki Igarashi through his own studio, Outline
  • The story centers on Sapphire overcoming loss and trauma to protect those she holds dear

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