Kakashi might also be there to assist Naruto. His wisdom and combat skills are always useful. He could provide strategic advice and even jump into battle when needed.
One interesting plotline could be Naruto having to team up with unexpected allies from different villages to save the world. Maybe he has to work with some of the old villains who have a change of heart due to a greater threat.
Naruto would adapt through his strong will and determination. When he first arrives in the magic world, he'd be confused but his adventurous spirit would drive him to learn. He'd watch how Hermione and other wizards interact with their wands and spells. He might start by using his physical ninja skills, like running on walls and high - speed movement, to his advantage in this new world. As time goes on, he'd start to understand the more complex aspects of magic, like potion - making, by comparing it to his own experiences of making ninja tools and medicines.
Perhaps Anko is trapped in a genjutsu and Naruto uses his own experience with breaking free from illusions to save her. He could sense her distress and use his chakra to disrupt the genjutsu, freeing Anko. This would show Naruto's growth and his ability to help those in need, even a more experienced ninja like Anko.
In a Naruto Saves Pyrrha fanfiction, it could be an interesting crossover. Naruto, with his powerful ninja skills, might save Pyrrha from a variety of threats. Maybe she's in a battle in her own world and Naruto's teleportation jutsu allows him to appear just in time. It could also be that Pyrrha is facing some sort of internal struggle, like self - doubt, and Naruto's indomitable spirit inspires her to overcome it.
Well, Naruto saving Shisui in a fanfiction could be really interesting. Naruto is known for his never - give - up attitude. If Shisui is in some sort of genjutsu - related trouble, Naruto could use his own strong will, which he has shown against powerful genjutsu like Itachi's Tsukuyomi, to break Shisui free. And his Sage Mode would give him an extra edge in combat if there are opponents to fight off while rescuing Shisui.
Well, in a fanfiction scenario where Naruto saves Sakumo, it could be that Naruto has mastered some new jutsu that allows him to enter into Sakumo's mind. Sakumo was in a very dark place after being shamed by the village. Naruto could use this jutsu to show Sakumo that there is still hope and that his worth is not defined by the village's opinion. Then he could bring Sakumo back to a positive state of mind and save him from self - destruction.
Perhaps in this fanfiction, Sarutobi is trapped in a genjutsu created by a rogue ninja. Naruto, being highly resistant to genjutsu due to his Uzumaki blood, manages to break into the genjutsu world. There, he has to fight his own inner demons as well as the rogue ninja's illusions to free Sarutobi.
In a Naruto saves Asuma fanfiction, Naruto could use his new jutsu skills. Maybe he discovers a way to reverse the damage done to Asuma. It could be related to his Sage Mode powers, which he could use to heal Asuma's wounds.
Another scenario could be that the woman is a shinobi from a small clan, but she has been framed for a crime she didn't commit. Naruto, believing in her innocence, saves her from being captured by other shinobi. He then teams up with her to find the real culprit and clear her name. Along the way, they face many challenges together and Naruto's positive attitude helps the woman regain her confidence.