He might collaborate with Rock Lee. Lee has so much energy and enthusiasm, he could be an amazing dancer in Naruto's rockstar band. His unique taijutsu moves could be incorporated into the choreography of their stage shows.
He might collaborate with Sakura. Sakura has a gentle voice which could contrast well with Naruto's more energetic one. They could sing a duet about their friendship and the memories they've shared in Konoha.
Well, in this fanfiction, Naruto might start dressing like a rockstar. He could have spiky hair not just for his ninja look but in a cool rockstar style. Maybe he'd learn to play an instrument like the guitar really loudly and use his ninja speed to play some crazy solos.
He might meet other banished shinobi who have formed their own small community. They could teach him different techniques that are not known in Konoha.
Yes, there are likely many 'Naruto is a Rockstar' fanfictions out there. Fanfiction platforms are filled with all sorts of creative takes on existing characters. You can check popular fanfiction sites like FanFiction.net or Archive of Our Own to find such stories.
Naruto is often very popular. His outgoing personality and determination make him a natural fit for the rockstar world. Fans love to imagine him on stage, rocking out and inspiring the crowd.
He might gain enhanced physical strength like Bane. Bane was known for his brute force, so Naruto could have a similar boost, being able to overpower his opponents more easily in hand - to - hand combat.
It could be about Naruto using his charisma, which he has in abundance in the original series, to become a popular rockstar. Maybe his ninja skills translate into amazing stage acrobatics or some kind of unique performance style.
There's a chance that it could be a group of rogue ninjas. They want to use Anko's new position as Naruto's slave to infiltrate Konoha. They might be after some secret technique or valuable information. Naruto and Anko must work together to expose this group and save the village while also dealing with Anko's slavery situation.
Perhaps there is a group in the ninja world that believes slavery is wrong and they see Kin's situation as unacceptable. They would be the antagonists in the sense that they oppose Naruto's ownership of Kin, even if Naruto has good intentions. They might try to rescue Kin and this could lead to conflicts between them and Naruto. Also, there could be some of Kin's old allies who don't want her to be subservient to Naruto and they might cause trouble as well.
His friends like Sakura, who is a medic - ninja, would surely be the first ones to try to help. She could use her medical knowledge and skills to diagnose Naruto's illness.