One possible scenario could be that Naruto was severely injured in a battle, perhaps against a powerful new enemy. He was brought to the hospital, but his injuries were too grave to be healed, and he passed away surrounded by his friends and family, leaving everyone in deep sorrow.
Hinata would also be very involved. She has deep feelings for Naruto. She might be at his bedside in the hospital, praying for his recovery. After his death, she would be heartbroken and might have to find a new purpose in life without Naruto.
Well, in some fanfiction, Naruto could be in the hospital because of a new and strange illness that no one has seen before. The story could focus on the doctors in the ninja world trying to figure out a cure. And Naruto being Naruto, he might be cracking jokes with the nurses and other patients, spreading his positive energy even while sick.
It's possible that there's a strange illness going around the village and Naruto goes to the hospital to see if he can offer any help. He has a strong sense of justice and would want to do whatever he can to stop the spread of the illness and make sure everyone gets better.
I'm not entirely sure which specific fanfiction this refers to. But if Naruto were to die and become like Kushina, it could be a very interesting concept. Maybe it involves some sort of reincarnation or magic. It could potentially explore Naruto's connection to his mother in a much deeper way, like inheriting her abilities or personality traits. However, without reading the actual fanfiction, it's hard to say exactly what would happen.
Fanfictions about Naruto being neglected and nearly dying can be quite intense. Some might depict him being pushed to the brink by the lack of support from the village. For example, he could be deprived of proper training or basic necessities. However, these situations usually lead to Naruto's character growth in a different way than in the original series. He might form unexpected alliances with outcasts or find new powers within himself.
Well, I'm not sure about a single highly recommended one. But in general, in these fanfictions, Naruto's death for Sakura can lead to many different plot developments. It could make Sakura stronger, or it could drive a wedge between her and other characters who might blame her in some way for Naruto's sacrifice.
He would be filled with rage. Naruto has a strong sense of justice and the fact that someone took Hinata away from him would fuel his anger. He would vow to find and punish whoever was responsible. He might even become reckless in his pursuit of vengeance, endangering himself and those around him. His friends would have to step in to try and bring him back to his senses.
The hospital setting can enhance their relationship by providing a more intimate and private space. For example, Naruto could be in a private room recovering, and Hinata could visit him often. With fewer distractions compared to their normal busy lives, they can really focus on each other.