Yui Yuigahama  

, 由比ヶ浜 結衣

Yui is a friendly and sociable girl who becomes the first customer for the Service Clubs. She requests their assistance in baking cookies for someone special. While she has no issues with her personality, she struggles to handle problems independently. Yui believes that talent is innate and often looked up to others until she was influenced by Yukino's perspective. After joining the Service Club, Yui attends after-school sessions despite initial opposition from Yukino.