hiromoto was born into the hyuga clan. his father was very noble and loyal and his mom was very kind. when the uchiha masacre happened,his mom and dad went and confronted itachi before he left. itachi killed his parents, leaving hiromoto parentless. as a result of this, hiromoto grew up with the same goal as sasuke, to kill itachi. therefore hiromoto became good friends with sasuke. being the only one sasuke showed his kind side to. he was placed on a team with two others also unknown.