A bit tamer on the nudity front here.
Naruto, after everything was said and done, found herself unable to undo the absorption and had to confess to Jiraya and Tsunade. After much debate Naruto was taught another Jutsu, this one would allow her to give those absorbed by her their bodies back but it wouldn't return her to her proper form or take what she had gained in terms of power. As Jiraya explained, the Jutsu he taught her had never been intended to be used more than once per day and he had warned her. The shrinking and deaging was a response of her Chakra due to the overload of mass she put on it, turning all the mass into Chakra until Naruto was turned into the child form she had now.
A side effect of this was also that Naruto, even if she was to absorb another grown woman, wouldn't become older again, and absorbing man wouldn't turn her male either. The reason he didn't teach her the release Jutsu in the first place was because he thought she would listen to what he told her.
As punishment for endangering two kunoichi of Konoha for... less than noble reasons, Naruto was forced to enroll in a Elementary School in the village, with the hopes of that being a lesson to Naruto. Naturally Naruto still had the brains, Chakra and strength of those she absorbed, not to mention a technique which would be ideal to wreak havoc. Tsunade however thought Naruto wouldn't use it.
At the school Naruto become quickly victim of a bully, Hasumi Shotaro He made fun of her multicolored hair, of how she was a girl, and, in his words, a weak little ninja vore. She was pretty sure he didn't even know what that last one meant.
Sadly for her their teacher was Shotaro's mother. While the woman was on her own friendly enough, she took Shotaro's word every time over Naruto's.
However, Jiraya also had taught Naruto how to perform a sister Jutsu of the absorbing technique. One that allowed to fuse two into one, either the user and another, or two different people as long as they were close enough to one another. And as such she watched the two dissolve slowly, their mass turning into energy to form a new, combined body, soul and mind.
The result of the mother and son fusing, Hasumi Nagisa as the end result called herself, was at first confused but decided, with the rational mind of the mother and the mischieviousness of the son combined, to let it slip with a mere slap on the wrist for Naruto, detention in other words. She still got scolded by Tsunade for it as there was no Jutsu to separate those you fused together, meaning two were essentially dead. Naruto though was satisfied with removing a bully from the school and improving a teacher, seeing as Nagisa was as smart as the two pieces that made her up would have been together.