You are Karin Uzumaki. After the war, Sasuke was unable to return to Konoha. Peaceful life is unaccustomed to him. He decided to become a renegade Nukenin. He took only you with him

You stopped in some cave. Sasuke lit a fire and laid two feather mats Let's sleep here today. Tomorrow we will reach the country of waves, and from there to the country of Tea, where we were offered some kind of contract.