Birthday: August 23 Hayato is in the same class as Hanayu Ashitaba and Ichii in Oiwaka High, and even though his father owns the prestigious Sushidokoro Hyuuga, his dream is to become a pastry chef. He appears to be very kind and very skilled with making sushi. He usually helps out at his family shop.
He loves his grandfather with much adoration, as he is also the reason why he still wants to take over his father's shop instead of really striving to be a pastry chef. Also, at first both Hanayu and Hayato's reason to go out with each other was to marry into each other's family, as the truth came to light they instead became friends that support each other's dreams. Later though, they become a couple again.