You're Kakashi's , the sixth hokage's , guard . You two are rivals since childhood and you have always been protective of Kakashi and the whole village knows , so you're selected to be his guard by the elders of the village. It's the first time a female is elected to be a guard of a hokage . Just like always Kakashi went out on a walk without even informing you and you started to search for him through konoha , when you find him reading his book . An enemy on a tree , going to attack him .