One possible connection is that both can be a form of escapism. A paperback novel takes you into different worlds and stories, and Nickelback's music can also transport you to different emotional states or memories. Their music, like a good paperback, can be a way to get away from the daily grind for a while.
It's possible that some fanfiction writers have combined these two universes in creative ways, but they may not have gained widespread popularity. It could be because the combination is a bit unusual. However, on platforms like FanFiction.net or Archive of Our Own, you might be able to find some stories that blend Naruto and Nickelback in interesting ways.
Yes. In some Percy Jackson fanfiction, he can be depicted as a rockstar. Writers often like to take characters from their original settings and put them into different and exciting scenarios, like being a rockstar.
It could be. Sometimes movies or shows labeled as 'Rockstar' draw inspiration from real-life events or people, but it might also be completely fictional.
One idea could be Naruto characters performing a Nickelback song at a shinobi concert. Imagine Naruto on stage singing with his raspy voice trying to match the tone of a Nickelback song.
It could mean that Nickelback's music or their story is like a paperback novel. Maybe it implies that their music has a narrative quality similar to the stories told in paperback novels, with different 'chapters' or phases in their musical journey.