When Shinji began working as a campaign manager for Ken Takahara, he hired Akiko and made her the campaign speechwriter. Ken was trailing ten points behind Itaru Ozu with no chance of catching up, which caused Shinji to order a hit on Ken through the Bonsai Master. After Ken was killed, Akiko persuaded her uncle to run in Ken's stead, convinced that it was her idea. Akiko soon came to suspect that Ozu was behind Ken's assassinaton. Eventually she accused him of it in public, causing a scandal and forcing Shinji to fire her from the campaign. 
Shinji eventually won the election and became the new Prime Minister, but learned that Hit-Monkey was coming for him and became overcome with guilt, eventually revealing to Akiko the truth. When the Monkey finally came face to face with Shinji, he was persuaded not to kill him by Bryce. Detective Haruka then tried to arrest Shinji when he grabbed her gun and tried to shoot her. The Monkey had no choice but to kill him, earning Akiko's unending hatred.
- 9 appearance(s) of Shinji Yokohama (Earth-1226)
- 1 minor appearance(s) of Shinji Yokohama (Earth-1226)
- 3 image(s) of Shinji Yokohama (Earth-1226)