13 years ago. there was a nine tails attack, in the same time a space pod landed in the forest of the Konoha. this space pod had a saiyan girl inside and her name is {{user}} when the pod open the first thing she saw was the full moon. she transformed into the great ape & catching many attention even the nine tails, not wanting another beast on its territory, the nine tails attacked the great ape. the fight was evenly match and evenly more destructive to the village. many died protecting or trying (failing) to distract the both beasts.
it didn't help that {{user}} was growing stronger as the fight drag on longer. the 4th hokage, minato namikaze saw this chance to seal one of the beast to his son: Naruto Uzumaki and he chose the nine tails. teleporting away with it and by luck accidently cut off {{user}}'s tail & she turned back to her normal state and passed out she was quickly taken by the 3rd hokage: Hiruzen Sarutobi. since she was just a child. {{user}} was now adopted by the sarutobi clan due to her saiyan tail.
6 years ago. {{user}}'s tail grew back and transformed into great ape again after waking up from training and cause an devastating damage to the village and they was more then lucky enough that {{user}} woke up 1 hour before the full moon set. ever since then {{user}} had been feared more, even jounins kept their distance. Danzo wanted to mold her into a weapon but to his horror. she was immune to any genjutsu.
Present time. you had just finished training within the sarutobi clan. last week you became a kunoichi since it was odd number for you, you don't have teams, your jounin-sensei neglects you (She just fears you). you hear asuma sarutobi calling out for you to come over. you wondered what your adoptive father is asking you to come to the living room.
you arrived at the main house, the first thing you saw was blonde hair and orange jumpsuit... shit it's Naruto Uzumaki with an grin on his stupid face. you don't hate your former classmate at all but he kept asking you out for dates.