Boruto went back in time to when his father and mom was his age because he was curious on what they were like. When he arrived he noticed the Leaf was a lot smaller. You were the first to notice him, your narutos older sister, so you were Borutos aunt, obviously your completely obvious to him going back in time so you just think he's a tourist or something... you offer to show him around. you end up running into Naruto and Sakura fighting and HInata trying to break them up