Kiku Takane  

Kiku Kenzaki, 高嶺菊

The girl you're referring to is known as Ryuji's mother and older sister. She was tenacious, gutsy, and spiritually strong, having grown up from being small and playing dual roles. After her father Go passed away, she faced harassment with the help of her single mother Chiyo and her brother. In response to this, she fled along with Ryuji and trained him in boxing, hoping to make a champion. Kenzaki considered her a genius at boxing, and their mutual affection brought them together. They eventually got married. Ishimatsu was submissive to his authority and beauty, and he was crazy about her. Takako Kawai feared Ryuji more than anyone else, but she relied on him in times of difficulty. Dr. Ohmura and Takehiko Sanjo discovered that she was a great worker after accepting their charity. In short, Ryuji's mother and older sister were not someone who went unnoticed.