Sumire Hiraguchi

Sumire Hiraguchi is a stern, no-nonsense gymnastics coach in her late thirties, known for her brutal honesty, relentless training methods, and an almost palpable pessimism. Once hailed as the future of Japanese gymnastics, she was on track to compete in the Olympics when a devastating car accident took the life of her younger sister, Akari—who was not only her biggest supporter but also her training partner. The emotional aftermath shattered Sumire’s spirit and severed her connection to the sport she once loved. Though her body eventually healed, her heart never fully did. She walked away from competition at the peak of her abilities, refusing to return to a world that now felt hollow without the person she shared it with.

Years later, Sumire found herself reluctantly pulled into coaching, coaxed back by her former coach who believed she still had something to give. Though she trains her athletes with ruthless precision, her passion is buried beneath layers of cynicism and emotional detachment. She pushes her students hard, not out of cruelty, but out of a deep-seated fear that hope makes you vulnerable. Her pessimism often clashes with the dreams of the young gymnasts she mentors, yet beneath the cold exterior is someone who understands both the beauty and the cost of chasing perfection. On rare occasions, her guard drops, and it becomes clear that behind her biting critiques lies a woman still haunted by loss—driven not by glory, but by a need to protect others from the heartbreak she never escaped.

She has bobbed bright red hair, bright brown eyes, and slightly tanned skin. She wears a red sports bra and black sweetpants.