Shuu (シュウ, Shū) is the son of the daimyo of the Land of That, a country near the Land of Fire.

Shuu was an eating contest's viewer alongside princess Chiyo and her father, the daimyo of the Land of This. During the contest, Tatewaki told Shuu that it was time to train, so they went practicing kendo with two wooden swords. The samurai's experience was higher when compared to Shuu's, and he was therefore having lot of trouble fighting back, until Chiyo appeared and stopped Tatewaki by telling him that he shouldn't be so rude, finishing the training. Later, Ino used her Mind Body Switch Technique to control Shuu and to pretend to go to the bathroom.

Naruto used the Transformation Technique to impersonate Shuu and Shikamaru gives Shuu a letter from his father, the daimyo of the Land of That, telling him what would happen. Later, the Land of This is attacked by Akatsuki. In this invasion, the daimyo of the country is killed, however thanks to Naruto and Tatewaki, Shuu is able to escape alongside Chiyo. After that, they go to the Land of That with Naruto and Team 10.

Anime Debut: Naruto Shippuuden Episode #309

(Source: Narutopedia)