Sonezaki Souichiro's daughter, born on October 10th in 1985, is a first-year student at Toritsu Shinnet High School and a member of the kendou club. Yui is generally kind and gentle, but can be short-tempered and fragile at times. Her father owns a curry restaurant, which unfortunately fails, causing him to leave the business to Yui. Despite her father's abandonment, Yui still loves and respects his cooking skills. When she meets Makito, she teams up with him to save her family's restaurant. She tries to help Makito as much as possible and develops feelings for him.
