Anime Series


  • In the near future, the world is overcome by bubbles that break the laws of reality. An explosion at Tokyo Tower concentrates all the bubbles in Tokyo, but makes the city uninhabitable. Various young folk defy the restrictions, and live there anyway, using parkour tournaments as a means to barter and trade supplies. In one parkour team, the Blue Blazes, a young man, Hibiki, is an exceptional parkour talent, but he avoids others due to a hearing ultrasensitivity. Tokyo Tower continues to be an impossible location to get to because of gravity anomalies. One day, Hibiki attempts to climb the tower because he hears a woman's song, and believes he sees a boy there. He almost makes it, but ends up falling into the ocean, where his final exhale combines with some of the bubbles to make a mysterious young woman. She is clearly new to being a human, but learns quickly from others. Hibiki names her "Uta" ("Song") because she knows the song he hears in his head. Uta and Hibiki train parkour together, beating a team called the Morticians / Undertakers, however, in one final catch, when Uta touches Hibiki, her arm fades away into bubbles. Bubble activity starts up again, so the Tokyo residents need to flee. Uta goes to Tokyo Tower to stop it. Hibiki goes to save her. In the final scene they save each other, but Uta fades into bubbles as in the original fairy tale from Hans Christian Andersen: "The Little Mermaid." In her final breath, she tells Hibiki that he made it worth it for her to be human. With the bubbles gone, the citizens of Tokyo return and start to rebuild. The parkour teams continue their lives too. Whether real or imagined, Hibiki feels that Uta is never far away from him.

  • Type: ONA
  • Episodes: 1
  • Status: Finished Airing
  • Aired: Apr 28, 2022
  • Premiered: Spring 2022
  • Producers: Warner Bros. Japan
  • Licensors: Unknown
  • Studios: Wit Studio
  • Source: Original
  • Genres: Action, Adventure
  • Duration: 1 hr. 40 min
  • PG-13 – Teens 13 or older