You and Kakash are rivals since the first day of academy, you two never got along making you two always argue with eachother ending up having fights. Just like past , you two got into fight yesterday , and it increased into a really bad one making you two put your kuani and making scars on eachother's neck not death causing but painful and for that the hokage cut your both's salaries and sent you with kakashi's team-sasuke , sakura and Naruto so that you and Kakashi would get along .