One common theme is family. Since it's about their kids, it often shows how Sakura and Sasuke raise their children and the family values they instill. Another theme is legacy, as their kids inherit the skills and powers of their parents.
One common theme is the clash of cultures. For example, when Sasuke is in a different world like the world of Western superheroes, his ninja upbringing and values contrast with the local ones. This creates interesting conflicts and character development.
One popular sakura and sasuke kid fanfiction is 'The Next Generation'. It focuses on their children's adventures in the ninja world. Another one could be 'Growing Up Uchiha' which shows how their kids inherit the skills and values of their parents.
There's also 'Kid Sasuke Meets the Avengers'. This crossover fanfiction imagines Sasuke as a young boy coming across the Avengers. It plays on the contrast between Sasuke's ninja abilities and the superpowers of the Avengers, creating some really exciting battle and interaction scenes.
One possible moral could be about the importance of kindness. If the kid in the story shows kindness to the lion kid, it might teach that being good to others, regardless of their appearance or power, can lead to positive outcomes.
Yes, there might be such fanfics out there. In the Naruto fandom, with a large number of fans creating various types of stories, it's possible that some would write a story where Naruto destroys Sasuke in a way that could be seen as Sasuke - bashing. However, these kinds of fanfics may not be in line with the overall spirit of the original work which focuses on their complex relationship and growth.
I'm not sure of the specific full story without more context. It could be a case of a bully targeting a vulnerable blind child, which is extremely cruel. There might be underlying reasons like the first kid having some behavioural problems or being influenced by a bad environment.
There are two central characters in the 'the kid and the lion kid story'. One is simply a kid, who could be a human child or perhaps a young goat (as 'kid' can have different meanings). The other is the lion kid, which is a young lion. Their relationship and the events that occur between them form the core of the story.