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Keiko Nobumoto was a Japanese screenwriter. She wrote several scripts for Cowboy Bebop in addition to being the series story editor.

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Interview with Keiko Nobumoto and Shinichirō Watanabe found on page 98 of the Bebop Extra Session Anime DVD with Art Guide Book.

One of the most influential creative minds behind Cowboy Bebop, she was responsible for giving the series its name.

I had heard about the song Space Cowboy by Jamiroquai and in my mind ”space” and “cowboy” were compatible terms. So it was natural to think of Cowboy Bebop. - Keiko Nobumoto (Interview: The Crew of Cowboy Bebop, 20 Years Later)

Nobumoto wrote the scripts for Asteroid Blues, Honky Tonk Women (co-written with Ryōta Yamaguchi), Sympathy for the Devil, Jupiter Jazz: Part 1, Jupiter Jazz: Part 2, Mish-Mash Blues (co-written with Shinichirō Watanabe), My Funny Valentine, Cowboy Funk, Brain Scratch, The Real Folk Blues: Part 1 and The Real Folk Blues: Part 2. She also wrote the screenplay for Cowboy Bebop: The Movie (2001).

Shinichirō Watanabe credited Nobumoto with bringing a much needed female perspective to the writing process.


Keiko Nobumoto became a screenwriter after winning the 3rd Fuji TV Young Scenarist Award. She has written scripts for film, animation, TV and theater, across many genres, and her previous works include Banana Chip Love, Nurse Call, World Apartment Horror, Macross Plus, and Running White Tape.[1]


  • She is the creator of Wolf's Rain.
  • She came up with the title of Cowboy Bebop.
  • She wanted Jet to accompany Spike during Spike's final showdown with Vicious.
  • She referred to Julia as "Spike's woman".
  • She wrote the script for Tokyo Godfathers.


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