I think this was asked elsewhere but I could not find the thread to be sure.
Obviously, the first step in getting Rasengan is to have a certain standing with Jiraiya.
Can it be possible that Santa Neji has the option to boost your standings with Jiraiya?
To the point where if you had 0 standing with Jiraiya, Santa Neji gives you 30~50% of the amount needed to get you to the "next stage".
I ask this because some of us dont really need anything else from Santa Neji and I'm sure some people have been trying for a long time to get Rasengan. ._.