|Played by||Kiyoyuki Yanada|
Hayato had the same-colored hair and eyes as his son, with his long hair being tied to a ponytail. He wore a flat hat that his son inherited years later.
Hayato was a very competent detective, having followed leads that revealed information about Panther Claw and lead him straight to their commander.
Hayato was hot on the trail of the mysterious Panther Claw with his son accompanying him. Encountering the Panther Claw commander, Sister Jill during a cruise, he was killed right in front of Seiji. Seiji could only watch die, and spend the next many years to become a great detective like his father.