Ban Naoyuki

He first served as a retainer of Katō Yoshiaki, one of the "Seven Spears of Shizugatake", who went on to become lord of the Aizu domain, in Mutsu.

Naoyuki served Lord Katō as a gunnery commander (teppō-taishō).

Naoyuki followed his lord during the invasion of Korea in the 1590s, and for his actions in combat there he was given a stipend of 350 koku.

However, at the Battle of Sekigahara in 1600, he opposed Yoshiaki's orders and subsequently left his service.

However, during the next year's Summer Campaign, he was killed in action fighting Asano Nagaakira's forces in Izumi province.