Hiromitsu is a member of the Nokizaru Clan.
Not much is known about Hiromitsu but he is extremely loyal to Kenshin and a little hasty and reckless.
Ginga Densetsu Weed: Orion
Hiromitsu is a member of the Nokizaru clan working closely with Kenshin and Unsai. He remains by their side for the events.
Ginga: The Last Wars
Hiromitsu stays with Kenshin when they arrive in Ou to help fight the bears off. He attacks one of the bears recklessly but is saved by Unsai.
A short time later, Hiromitsu tries to take Fuyuki away from battle as he is injured by Monsoon, Hiromitsu hoists Fuyuki onto his back to try and escape but both are crushed to death by Monsoon. Their bodies are taken away by Sirius and Shion.