Well, for some, it's about exploring the dynamic between an experienced mentor like Kakashi and a young, determined Naruto. They find the idea of a closer, more intimate relationship between them interesting. Also, it gives fans a chance to be creative and add their own spin to the characters. In the original story, Kakashi is very important to Naruto's growth, and fans want to take that further in a romantic sense. They can create scenarios where their mutual respect and admiration turn into love.
People write it because they see a deep connection between Kakashi and Naruto in the original series. They might feel that there's potential for a different kind of relationship that wasn't fully explored in the anime or manga. So they use fanfiction to expand on that.
One reason is that fans love both characters so much that they want to see them in a different kind of relationship. Kakashi is a complex and cool character, and Naruto is full of energy and determination. Combining them in a lovers' relationship in fanfiction allows fans to explore different emotions and interactions. It also gives a chance to develop the characters in new ways, like showing a softer side of Kakashi and a more mature side of Naruto in the context of a romantic relationship.
The best chapter pointer here is Chapter 37, "Those in the know anticipate the transformation, while the oblivious think it's a fashion show.". It opens with The barrage was suddenly filled with hahas, but the two guests present...
Look to Chapter 68 for the clearest answer. It begins with Jiang Li carried the noodles straight out of the kitchen and came to the..., keeps building through Uncle had already returned from the fields, and he was sorting through a..., and lands on But didn't Uncle Zhao say he was still sick?.
Chapter 50 is the strongest chapter-level answer because it starts from [666, if good scores determine rankings, is Flash Change's production team... and follows through on What kind of heavenly being had such a sour temper and liked dancing....
Chapter 934, "Gu Pansheng's Grace [Extras: Protagonist's Edition]", is the clearest early answer because it turns Great Grandpa's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Twenty minutes later, Jiang Shixu had finished cooking.
A practical answer is Chapter 64, because it turns the idea into a concrete scene. The chapter opens with Chixia Village lay in tranquil slumber., adds pressure through Is there really a need to put her down like this?, and ends on He'd been a host for so many years; he was used to it..
A practical answer is Chapter 24, because it turns the idea into a concrete scene. The chapter opens with Not only that, even the non-mainstream photos she had previously posted on..., adds pressure through Just because of his arrival, both were severely affected by public..., and ends on Shi Xu.
The best chapter pointer here is Chapter 26, "Sending My Big Brother to a Transformation Variety Show". It opens with Shen Lan was bent over processing a large stack of press briefs on her... and closes on If you think you can use our family connection to have me handle this....
The best chapter pointer here is Chapter 38, "Pretending to be a Top Student? You Must Have Forgotten Your Own College Entrance Exam Score!". It opens with Jiang Li had also observed the girl who had just entered.
Chapter 843, "Why the Sudden Change of Heart?!", is the clearest early answer because it turns Rong Junsheng's situation into a concrete plot event. Early on, Uncle Zhao also expressed that they did all this for money.. By the end, Gu Yu is my real grandson;
Chapter 788, "Don’t be so fierce, I'm scared", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. It opens with Song Xue covered her mouth in shock. and closes on I really did not push the auntie that day; maybe the living room....