Don't know why no one has done this idea but here we go. This is a challenge to anyone who wants it.
Yang is Naruto's older sister, now we have reasons for this...
1) Yang has slightly lighter violet eyes than Kushina
2) Yang has long blond hair that has sum spikyness to it
3) Has that Smirk/Grin that Naruto, Minato, and Kushina have
4) Yang has an explosivly violent temper, like Kushina, especially about her hair
5) Is a BAMF like Naruto, Minato, and Kushina
The premis of this story is Yang left after Danzo and the Council told her, that her family died. She comes back with her team after 10, (she was 7 during the Kyuubi attack). She finds her little brother being beaten, and getting pissed, Yang and the rest of team RWBY take him back to BEACON.
For this fic, Naruto is the standard beaten, tortured and ignored that is in a lot of fics. I don't like how people have Naruto really scarred up, but if you can make it work, then by al means. I think it isn't possible because of the Kyuubi healing even that sholder wound he got from Susuke without a scar.
Well HAVE FUN!