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Kishimoto was inspired on his high school years, where he was a rebel and got into constant fights and his love and admiration for Bruce Lee and his films. The game was designed and directed by Yoshihisa Kishimoto with a small team in four months. In what would become a trend by Technōs, the console version differs significantly from the arcade version in order to increase the length of the game. The localization for the NES for the western market was also published by Taito and named Renegade. The game was ported to the Famicom on April 17, 1987, the first game Technōs Japan made for consoles. It is considered one of the most influential titles in the video game industry and many consider it the first beat 'em up ever made (the first beat 'em up was Irem's Kung-Fu Master). Kunio-kun introduced 4-directional-control and enemies that could take multiple hits. Nekketsu Kōha Kunio-kun is the technological predecessor to Double Dragon, which was created by Kunio-kun's designer and director: Yoshihisa Kishimoto (after the success of Kunio-kun, Technōs Japan wanted a sequel which used two simultaneous players and to avoid making regional and graphical changes, Kishimoto created Double Dragon, inspired by his love of Bruce Lee and his film Enter the Dragon). It was published by Taito for the western market as Renegade (which made changes to all of the sprites and backgrounds). "Hot-Blooded Tough Guy Kunio") is the inaugural title of the Kunio-kun series, a beat 'em-up game released for the arcades in 1986, developed and published by Technōs Japan Corp.
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Nekketsu Renegade Kunio-kun ( 熱血硬派くにおくん, Nekketsu Kōha Kunio-kun ?, lit.