| Well...that's...y'see.... Okay! Fine I'll go with you!! But only 'cause Hanzo ordered it! It's nothing to do with you! I mean, err.....umm....
Sasuke is a Rokkaku ninja and is the child of former Rokkaku vice leader Hien, although Sasuke is unaware of this as it is Rokkaku tradition that children not know their identities of their parents while growing up. In the past, his desire to grow stronger led him to challenge mountain bandits in the Banner Pass and he once picked a fight with the leader of the Toran Liberation Army there.
By the time of the Dunan Unification War, because he had been in training as a swallow until the age of 12, Sasuke still lacked experience when he was ordered to join the New State Army with Mondo by Hanzo. Despite this, he was very talented and had a strong drive to improve and grow stronger. Sasuke aided the New State Army by performing reconnaissance missions, such as rescuing Ridley Wizen after he was captured by the Highland Kingdom.
Sasuke possessed a strong crush on Kasumi and was also envious of her for growing up so much during the Gate Rune War. He was often unable to speak to her during their time together in the New State Army because of this. Following the war, Sasuke returned to Rokkaku with Kasumi and Mondo.