In an interview about the development of Super Mario Sunshine with producer Takashi Tezuka and directors Yoshiaki Koizumi and Kenta Usui, it was mentioned that the game's development began with the idea of gameplay involving a water pump.
Later on, Yoshiaki Koizumi, who had previously helped with the plot of A Link to the Past, was brought into the team.
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It grew into an original project under the direction of Takashi Tezuka, with a story and script created by Yoshiaki Koizumi and Kensuke Tanabe.
Junichiro Koizumi | Yoshiaki Koizumi | Marie Koizumi | Yoshiaki Tsutsumi | Yamashita Yoshiaki | Ōmura Yoshiaki | Kyōko Koizumi | Junichirō Koizumi |