Hitoka Yachi is a supporting character in the anime and manga series Haikyuu!!. She joins Karasuno High School's volleyball team as a manager during the team's second year. Initially shy and lacking self-confidence, Yachi grows throughout the series, becoming an invaluable member who supports the team both emotionally and logistically. Her cheerful personality and dedication help boost the team's morale. Yachi forms strong friendships with the players and other managers, and her creativity and resourcefulness often assist the team in overcoming various challenges.