Hayato Hōshō (宝生迅人) trains as a teenage student at the Japan Racing Association's Horse Racing School, aspiring to become a professional jockey. He sports greenish-brown hair in a bob cut and distinctive purple eyes, typically dressed in the school uniform.

His path carries an initial advantage: he is the son of Yutaka Asahi, one of the school's instructors, providing a significant familial connection to the racing industry.

However, Hayato faces a critical physiological challenge. His body naturally tends to bulk up, making it impossible for him to maintain the mandatory jockey weight limit. Despite persistent efforts, he cannot meet the graduation requirement of staying under 48kg. This physical limitation forces his retirement from the jockey program roughly six months after enrollment.

Following his departure from training, Hayato transitions into veterinary studies. This career shift leverages his familial connections and accumulated experience within the equine industry, allowing him to continue working professionally with horses despite being unable to pursue racing.