Not much is known about Fuyuki but he is extremely loyal to Kenshin and a little hasty and reckless.
Fuyuki is a member of the Nokizaru clan working closely with Kenshin and Unsai. He remains by their side for the events
Fuyuki follows Kenshin into battle when bears take over Ou. He is very loyal and remains by Kenshin's side, but when he comes across some bears, he attacks them against orders. Luckily, he is saved by the arrival of Unsai. A short time later, Fuyuki attacks Monsoon with Kenshin but is hit by the bear. When Hiromitsu tries to take him away, both are crushed to death by Monsoon. Then, Fuyuki and Hiromitsu's bodies are taken away for burial by Sirius and his comrades.