|Stand||I Want You|
|Birthday||August 9, 1987|
|Favorite Movie||Groundhood Day|
|Favorite Actor||Ryunosuke Kamiki|
Despite being 24, Hayato looks like a young 11-year old boy with straight ginger hair that reaches just past his chin and hazel eyes. Thanks to this, he gained the nickname "The Man who Never gets Old".
Josuke, Jotaro, Okuyasu and Koichi were killed during a time loop, then the day re-started, leaving Hayato traumatized, the only hope to stop the killer has died. Hayato was under his bed sheets, not wanting to go to school. Then, his father entered his bedroom, knocking him out.
When Hayato awoke at 9:00 AM of that day, he apologized to his father for over-sleeping and not going to school, Kosaku told him he probably just had a bad dream. Kosaku and Hayato spent the rest of the day together, and returned home with Shinobu waiting for them with dinner.
Hayato spent the next years noticing something unusual, he didn't grown up like his best friend Kimura or his other classmates, but Kosaku told to not worry about it.
Hayato, now 15 years old, was taking care of his 4 years old brother Yoshimaru, until Kosaku entered the room with an Arrow on his hand. Kosaku told Hayato about the Arrow being a give from his grandfather, saying it has the power to awaken Stands, special abilities that only people who posses it can see. Hayato asked his father what he wanted to do with the Arrow, so Kosaku pierced Yoshimaru with it, awakening his Stand, and then Kosaku told to not tell what happened to his mother.
Hayato eventually found a job in an office, helping his younger brother to control his special ability.
- His favorite movie, animal and musican are clear refences to Kira.