Hiromatsu was a minor hero from the Shōgun novel and television mini-series by James Clavell. Also known as the Iron Fist, Hiromatsu was one of Lord Yoshi Toranaga's most trusted aides and advisers. Hiromatsu was one of Toranaga's key Generals. When John Blackthorne arrived in Japan on board the Dutch ship Erasmus in the spring of 1600 word of the arrival got back to Toranaga. Seeing an opportunity to learn more about the Europeans, Toranaga sent Hiromatsu to take charge of Blackthorne before Lord Kasigi Yabu and Father Sebastio could have them killed.