Well, Naruto's chakra control would have to adapt. In the Dying Light world, he might use his chakra to enhance his weapons, like making a kunai cut through the tough zombie hides more easily. His Rasengan could also be modified. Instead of just being a powerful close - range attack, he could potentially throw it like a grenade in the Dying Light environment, causing a lot of damage to groups of zombies. And his sensing ability, which he uses to detect enemies in his own world, could be used to sense the approaching zombie hordes from a distance.
I'm not entirely sure if there is a specific 'Naruto Sings Time of Dying' fanfiction. Fanfictions cover a wide range of scenarios and ideas. It could be that such a unique concept exists, but it might also be a very niche or even new idea that hasn't been written yet. You could also try reaching out to Naruto fan communities on social media platforms to ask if anyone has come across such a fanfiction.
One possibility could be that Naruto has been poisoned by a new and unknown enemy. This poison is slowly eating away at his life force, and he's trying to hide it from his friends and family so as not to worry them. He might be secretly seeking a cure while still fulfilling his duties as Hokage.
It could be a rogue shinobi from Naruto's past who has been biding his time. This shinobi might have developed a new jutsu specifically designed to target Naruto and make him die slowly. He's doing it secretly to cause chaos in the Hidden Leaf when their hero suddenly passes away.
The people closest to Naruto, like Hinata, would be completely devastated. She would be by his side, crying and feeling like her world is falling apart. The thought of losing Naruto, the man she loves, would be almost too much to bear.
One popular 'naruto dying fanfiction' is 'The End of the Orange Hokage'. It shows Naruto sacrificing himself to save the village from a powerful new threat. Another is 'Naruto's Final Stand' where he faces an illness that slowly takes his life while still trying to protect his loved ones.
One possible reason could be a powerful curse placed on him. Maybe an enemy with dark magic managed to put a slow - acting curse that is gradually sapping his life force.
One idea could be that as Minato is dying, he passes on his special jutsu knowledge to Naruto in a final moment of father - son connection. Kushina, on the other hand, tries to comfort Naruto while also mourning Minato.
In a Naruto dying of sickness fanfiction, you could explore the impact on the village. The villagers who once shunned him now feel a sense of loss. They start to realize how much he has done for them. For the actual writing of his sickness, make it a slow - burning process. He first gets tired easily, then has fainting spells. His friends try everything to save him, from searching for rare herbs to trying experimental jutsus, but in the end, he succumbs to the illness, leaving behind a legacy.
It can have a big impact. Some fans might be really sad because Naruto is such a beloved character. It can also inspire new fanarts and discussions within the fandom.