Here's how a fanfic might go. After the battle with Pain, Naruto is surrounded by people, but his eyes keep searching for Hinata. When he finally spots her, he makes his way through the crowd. Hinata is blushing but stands her ground. Naruto reaches her and says, 'Thank you for always being there for me.' Then, he cups her face and kisses her. This kiss is a culmination of all the times Hinata has supported Naruto, and now he's finally realizing his own feelings for her.
It happens after a significant amount of time spent on character development and side plots. Naruto returns when the story arc demands his presence for the next major conflict.
It could symbolize a new chapter in their relationship. Before, Naruto was mostly focused on his goals and being recognized in the village. But after facing Pain, he might have a new perspective on life and love. The kiss with Hinata could be the start of a deeper, more romantic connection, showing that he's ready to explore his feelings for her and let someone be close to him in a different way.
The plot at the end of " Celebrating Years " was that Fan Xian and his party met Haitang Duoduo and Thirteenth Wang at the border of Northern Qi. They headed to Shangjing together. On the way, Fan Xian met Zhan Doudou and Si Lili. They told him that Xiao En and Ku He's bodies had been hidden by Shen Zhong in a temple in Shangjing. Fan Xian decided to sneak into Shangjing, find Xiao En and Ku He's bodies, and uncover the secrets of the Temple.
In Shangjing, Fan Xian encountered all kinds of dangers and challenges. Not only did he have to face the pursuit of the Northern Qi royal family, but he also had to deal with the challenge of Xiao En and Ku He's disciple, the Shadow. In the end, Fan Xian found Xiao En and Ku He's bodies. He also found a mysterious box in the Temple. Inside the box was a key and a letter. The letter contained the secret of the temple and a prophecy. Fan Xian decided to take the key and letter back to the Qing Kingdom and uncover the secrets of the Temple with Chen Pingping and the Emperor.
According to the information you provided, the plot of the second season of the TV series "Celebrating Years" is roughly as follows:
1. The spring examination. Before the original story went to Northern Qi, it was a very important scene because in the original story, the meaning of this matter was to defeat Guo Youzhi and force the Eldest Princess out of Jingdou. In the first season, these two things had already ended, and the three students of Fan Xian had not yet appeared.
2. After Fan Xian returned to Northern Qi, they got married.
3. Versace and the Third Prince opened a brothel and caused a death.
4. The assassination at the Hanging Temple.
5. Kill the Crown Prince and Second Brother.
There's also 'The Bond of Enemies'. In this fanfic, Pain, after his defeat, is given a second chance at life by Naruto. It shows a really interesting dynamic as Pain tries to figure out his new place in the world with Naruto's influence. It has some great action scenes and emotional moments.
It could be about Naruto having some sort of connection to Pain. Maybe in this fanfiction, Naruto is somehow related to Pain in a way that wasn't in the original story, like being his son in an alternate universe. This could lead to a whole new set of storylines, with Naruto perhaps having to deal with the legacy of Pain while also following his own path as a ninja.
In a fanfic where Naruto gets killed by Pain, it's a dark turn of events. The story would then likely focus on how the remaining characters cope. For example, Kakashi might feel a great sense of guilt for not being able to protect Naruto. Hinata would be heartbroken. Moreover, the Nine - Tails would be left without a host, which could also lead to all sorts of problems. The ninja world would lose its most prominent symbol of perseverance and friendship, and it would be a very different world from the one we know in the original Naruto story.
Obviously, Naruto would be one of the main characters as it's about him being the son of Pain. Pain himself would also be a crucial character, even if he might not be physically present all the time. And characters like Sasuke, Sakura, and Kakashi would still likely play important roles as they are Naruto's friends and mentors in the original story and would have to interact with Naruto in this new, changed scenario.
A fanfiction titled 'Naruto's Admiration for Pain' is also worth checking out. It focuses on Naruto's growing admiration for Pain's power and ideology. However, Naruto also tries to change Pain's more extreme views. The story is full of intense dialogues and Naruto's internal struggles.