Kazuma Hayashida is a 42-year-old veteran jockey affiliated with the training center where the main characters pursue their jockey education. His extensive experience informs his role within the horse racing environment. Hayashida interacts directly with trainees, contributing to their development throughout the "Training Center" story arc. He maintains a connection to Futoshi Kashino, the training center's caretaker and owner of the racehorse Kisuke. Hayashida's presence provides professional insight into the jockey profession's realities.