Kitaoka later gives Goro use of Zolda for a while to conceal himself, until get sets up a scheme of having Shinji believe he accidentally killed Goro to have him quit being a Rider. However, Zolda manages to sneak attack Ryuki and Knight while they were fighting the Wildboarder with Magnugiga, killing the monster while giving Ren memory loss in the overkill attack. But after learning that her mother is hospitalized, Kitaoka secretly pays for her mother's surgery and earns the girl's respect. Kitaoka had intended to frame Shinji for kidnapping but after being fired as Shinji's lawyer when his intentions were revealed, Kitaoka is annoyed that Shinji is freed because of a girl named Yukari whom he brushed off while refusing to aid her.

After fighting him, Kitaoka questions Ren's reasons for not killing Shinji. However, when a Wildboarder attacks, Kitaoka exposes himself while learning that Ren is a Rider - Kamen Rider Knight - as well. However, learning that Shinji's Ryuki with seeing the wound he inflicted in their fight, Kitaoka goes to Atori Cafe to get his pay from Ren. Later, after attacking Kamen Rider Ryuki just as Ryuki kills a Zebraskull, Kitaoka learns that Shinji is in jail for suspected kidnapping and agrees to help him on the condition that Reiko writes a special article to boost his positive image. Interested in Shinji, Kitaoka allows Shinji to hang around with him and understand his ideology until Shinji hit a nerve of Kitaoka's thought to live for one's own desire seemed hollow made Kitaoka kick him out. Shinji later meets Kitaoka again when he and Reiko wanted permission from the Kawazu Pharmacy to inspect their factory for environmental violations. Though Shinji was unaware of this at first, he attempts to save Kitaoka only to be rescued by his apprentice Goro Yura. He first meets Shinji Kido after he clears the Sakura Company of its credit fraud charges and is later pursued by its bookies after taking their dirty money as added payment for his services. Because of his illness, he suffers from frequent dizzy spells and fainting. His prize is to be immortal so that he could continue his extravagant lifestyle. Because he has a terminal case of cancer and was given only several more months to live, Kitaoka accepted Shiro Kanzaki's offer to join the Rider Fight. Shuichi Kitaoka is a self-proclaimed 'Super-lawyer', tending to only help someone if he has something to gain. 3.1 OOO, Den-O, All Riders: Let's Go Kamen Riders: ~Let's Look! Only Your 48 Riders~.

2.6 Kamen Rider Heisei Generations Forever.2.4 Kamen Rider × Super Sentai: Super Hero Taisen.2.3 OOO, Den-O, All Riders: Let's Go Kamen Riders.2.2.3 10th Anniversary Project: Masked Rider LIVE & SHOW.2.1 Hyper Battle Video - Ryuki vs Agito.

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