Netflix's newest princess story is built around a heroine who first appeared more than 70 years ago. The Ribbon Hero arrived on August 8 and introduces a new audience to Princess Sapphire, the sword-fighting royal at the center of Osamu Tezuka's Princess Knight.
Sapphire made her manga debut in 1953. That places her 36 years before Disney's animated version of Ariel appeared in The Little Mermaid in 1989. The comparison is useful, but it needs one important detail: Hans Christian Andersen published the original Little Mermaid story in 1837. Sapphire is older than Disney's Ariel, not older than the mermaid fairy tale itself.
Sapphire Was Famous Long Before Netflix
Princess Knight ran in Japan's Shojo Club magazine from 1953 to 1956. Tezuka's official website describes it as the first Japanese story manga made for girls and credits it with influencing the development of later girls' manga.
The original story follows Sapphire, a princess raised as a prince because the laws of her kingdom do not allow a woman to inherit the throne. She learns to fight, protects her people, and refuses to let other people decide what kind of person she should become.
That combination of royal drama, action, comedy, and questions about identity made Sapphire different from many princess characters of her time. Princess Knight later received animated adaptations, and the character became an important part of Tezuka's long history in manga and anime.
Why the Ariel Comparison?
The internet often treats every animated princess as part of the Disney conversation. Sapphire's history shows that princess stories developed in different ways around the world.
Disney's Ariel became a global movie character in 1989. Sapphire had already been fighting with a sword and challenging the rules of her kingdom for decades by then. That does not mean Disney copied Princess Knight, and Netflix has not presented the new movie as a challenge to The Little Mermaid.
The Ribbon Hero is not inventing an old-fashioned heroine for a modern audience. It is updating a character who helped shape manga made for girls in Japan.
What The Ribbon Hero Changes
The new movie is a modern reimagining rather than a scene-by-scene adaptation of the original manga. It follows Sapphire after Silverland is destroyed by Nergal. She is dealing with loss while trying to protect the people who remain.
Director Yuki Igarashi and animation studio Outline give the story a faster visual style, large action scenes, and a brighter use of color than viewers may expect from a manga that began in the 1950s. Netflix is presenting the film as an accessible fantasy adventure, so newcomers do not need to know Tezuka's full history before watching.
The basic parts of Sapphire remain familiar. She is still a princess who fights, still carries the responsibility of a kingdom, and still has to decide what kind of leader she wants to be. The movie changes the setting and details around her without removing the reason the character lasted for so long.
The Movie Is Already Dividing Viewers
Early reactions have praised the animation, music, and action, especially when the film becomes more visually ambitious. The main criticism has been the amount of story packed into one movie. Some viewers may enjoy the speed, while others may want more time with Sapphire and the world around her.
That split makes sense for a film trying to introduce a classic character, rebuild her story for a new generation, and deliver a complete fantasy adventure at the same time. The visuals are easy to notice immediately. The story may take longer to settle with viewers.
Do You Need to Read Princess Knight First?
No. The Ribbon Hero tells its own version of Sapphire's story and explains what new viewers need to know.
Reading Princess Knight can add more context about the character and her importance to manga history, but it is not required. The movie is designed to work as a first introduction.
Longtime Tezuka fans should also expect changes. This is not a replacement for the manga or its earlier adaptations. It is another version made for viewers discovering Sapphire through Netflix.
Where You Can Watch The Ribbon Hero
The Ribbon Hero is streaming worldwide on Netflix. It was released on August 8, 2026.
The movie gives Netflix an anime princess with a much longer history than the release date suggests. Viewers may arrive because the Ariel comparison sounds surprising, but the more interesting story is Sapphire herself: a character from 1953 who is still being rewritten for new audiences.
