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Acting for Two/Talking to Himself: Subverted in J.A.K.Q. vs. Goranger. Even though Hiroshi Miyauchi played Akira Shinmei in Goranger as well as Sokichi Bamba/Big One, Akira Shinmei never appears in his civilian form (none of the Gorangers do, except for Peggy) and Ao Ranger's interactions with Big One are limited.
Koki Tanioka (Den Masao/Battle Japan in Battle Fever J) guest-starred as an old friend of Sakurai in Episode 11.
Romance on the Set: Yoshitaka Tamba (Gorō Sakurai) and Mitchy Love (Karen Mizuki) dated each other as their characters became romantically involved towards the end of the series. However, their relationship did not last after the series ended.