A lesser - known but really good one is 'Naruto's Slender Companion'. It delves deep into the backstory of the uke character with a slender body. It shows how their physical appearance affects their relationships and their journey in the ninja world. The story is filled with heartwarming moments as well as some intense battles.
You can try Archive of Our Own (AO3). It has a large collection of fanfictions, including those related to Naruto with the slender body uke trope. The search function on AO3 is quite good, allowing you to filter by tags to find exactly what you're looking for.
In 'cute uke Naruto' fanfiction, he usually has some very endearing habits. Maybe he stutters when he's nervous or has a really cute laugh. His relationships are often filled with a lot of fluff. He might be really shy when it comes to romantic feelings, which is a big contrast to his bold and brash self in the main story. He's also often the one being protected or cared for in a more gentle way.
Another characteristic is that his relationships, especially romantic ones, are emphasized. If there's a pairing, Naruto as the uke will have a more submissive role. His appearance may also be described in a more delicate and cute way, like having big, expressive eyes and a small frame. These fanfictions often focus on his emotions and how they are easily affected by the events around him and the people he cares about. This can create a lot of heart - warming or even angsty moments depending on the plot.
Well, in the context of fanfiction, the idea of 'naruto is sasuke's uke' can be a way for fans to re - imagine their relationship in a different light. It might be inspired by certain character traits of Naruto that could be seen as fitting the uke role, like his big heart and sometimes naivete. This concept allows fans to play with the traditional notions of their friendship or rivalry and turn it into a more romantic or complex relationship where Sasuke has a more controlling or leading part.
I'm not sure about its popularity. Fanfictions can vary greatly in how well - known they are. It depends on how many people are interested in the crossover concept of Naruto and Slender Man. There are so many fanfictions out there that it's hard to say if this one has a large following.
One common theme is the exploration of Naruto's different relationships. Since he's in the uke role, it often focuses on how he interacts with the male characters in a more vulnerable or romantically - charged way. For example, there might be themes of protectiveness from the other male characters towards Naruto.
A great fanfiction in this genre is 'Naruto's Cuteness Overload'. Here, the author focuses on Naruto's uke qualities and combines it with his growth as a ninja. There are cute moments during his training when he's being all clumsy and endearing, and his relationship with a certain character develops in a very tender and cute way.
There's also 'Cute Naruto in the Hidden Village'. In this fanfiction, Naruto is depicted as a very cute uke character. The story might show his daily life in the village while highlighting his cute and sometimes vulnerable side. It often has interesting interactions with other characters like Sasuke and Sakura.
In this fanfiction, it might start with a strange backstory of how Naruto came to be the son of Slender Man. Maybe there was some sort of otherworldly interference. His relationships with his friends like Sasuke and Sakura would be very different. They might be scared or intrigued by his new heritage. And Naruto himself would have to deal with the fact that he's not what he thought he was, all while facing the usual challenges in the Naruto universe, like fighting enemies and protecting his village.