You can try looking on popular fanfic websites such as Fanfiction.net or Archive of Our Own. These platforms often have a wide variety of fan - created works, including Naruto - related fanfics. Just use the search function and type in 'naruto of frozen forest' and see if it pops up.
There are several places to find the 'naruto of frozen forest fanfic'. Firstly, check out the big fanfic repositories. Fanfiction.net has a large collection of Naruto fanfics. Search for the specific title there. Archive of Our Own is also a great resource. It has a well - organized tagging system, so you can search for Naruto - related works and then look for the 'frozen forest' aspect. Additionally, some smaller Naruto fanfic communities might also host this particular fanfic. You can find these communities by searching for Naruto fanfic communities on search engines and then exploring their content.