He only briefly appears in the Unlimited Blade Works route after Shirou and Rin Tohsaka form their official alliance. Along with other students, he notices Rin waiting in the hallway, and he describes her feelings of frustration of Shirou not noticing her from her expression and posture in such an overly-accurate and ridiculous way that Shirou questions if he was a general in his previous life. If Shirou hides from her, Gotou and the other students continue to narrate her actions until she attacks Shirou with an eraser that flips Shirou over his desk, causing Gotou to think Shirou was performing a "ninja move" and asks to be able to learn it from him. He did not have a design in the original visual novel, and he only obtained one in the first anime adaptation.
Gai appears very briefly, helping Shirou by giving him the description of a "foreign beauty" that was seen wandering around Homurahara.
 Fate/side material - Encyclopedia: Gotou-kun [Person's name], p.060 [T]
Gotou-kun [Person's name]
A happy-go-lucky guy that changed his behaviours everyday depending on the TV shows he watched the night before.
His favorite period drama was Abarenbo Shogan.
 Fate/stay night [Unlimited Blade Works] Animation Material I - Kinoko and Takashi Q & A, p.041 [T]
Q: I was wondering why they changed Gotou's character designs.
Q: I was wondering why they changed Gotou's character designs. <Kusakaki>
Nasu: Don’t be silly. That Gotou can change at will.
Takeuchi: Right? If you've ever claimed to see him, it was really just a figment of your imagination. But really, we just thought the designs were a little bit outdated, so we went with those changes.