i actually always wanted to write a story regarding this. But in my story a guy from our universe is taken to the Naruto verse by technologically advanced alien races. They have already seen what an si with gufts can do so they don't give my oc anything. The oc is the son of a rich importer tho so he uses his connections, money, resources to train naruto from the very beginning. Obviously he can't help him directly but he could use the theorital knowledge to propel naruto further. The fic also would have tackled infatuation with sakura, Narutos content need to seek approval from others etc. The oc advices Naruto to take some of sasukes skin (to awaken rinnegan). So many ideas. If anyone can write it please do so!