Strange how he writes his name both ways. In the chuunin exam and the opening intro it is written in katakana as ナルト but strangely when he signed the frog contract he wrote なると instead...which is it? Sorry for asking such a useless question but I'm currently learning jap and just wanted to clear this up. Any opinions?
They are both perfectly valid ways to write it.
Ive not yet seen him use a kanji version though.