a professional athletic trainer, having studied in the United States to support athletes, including his childhood friend Tooru Oikawa. reliable, tough-love nature but channels it into a professional career as an athletic trainer. He trades his hot-headed teenage habits for calm wisdom, supporting players. He is highly disciplined and focused, utilizing his knowledge to keep top-tier athletes in peak physical condition.He is highly respected for his firm yet caring attitude, effortlessly earning the trust of professional players who look up to him as a leader.