In 1199 Tsuda ascend to the office of Emerald Champion, while his predecessor Utaku Ji-Yun retired and assumed the mantle of Utaku Daimyo.
In the finals Tsuda defeated Toku Kyoko, the Monkey Clan Champion. He selected Yasuki Umi-Ushi as his First Magistrate.
Tsuda was an honorable man with a strong sense of justice who tended to follow his gut instincts. He avoided being mired in the politics of his own clan and actively avoided engaging in Dragon politics.