Momoko Shigeno began her career as a kindergarten teacher caring for a young Gorō Honda. Following the death of Gorō's mother, she formed a relationship with his father, Shigeharu Honda, becoming engaged to him. After Shigeharu's death, Momoko adopted Gorō and raised him alone. Years later, she married Hideki Shigeno, Shigeharu's former teammate and close friend, taking his surname. This marriage created a blended family where she raised Gorō alongside the two children born to her and Hideki. Momoko consistently provided steadfast familial support and stability throughout Gorō's life, including during transitions like the family's relocation to Fukuoka featured in "The Winning Shot of Friendship," anchoring his experiences.