Well, first of all, they often have a clear leveling system. Just like in games, characters can gain experience and level up, which usually means they get stronger, gain new abilities or skills. For example, in 'Solo Leveling', the main character's leveling process is a major part of the story. Another characteristic is the existence of quests or missions. The characters need to complete these tasks to progress in the story, similar to how it is in games. And there are often stats like strength, intelligence, etc. that can be improved.
Well, it really depends on the specific fanfiction. Some fanfictions do make Ichigo overpowered. They might do this to explore different storylines or just for the fun of it. For example, in some, he could have a sudden boost in his reiatsu that makes him almost unbeatable. But not all fanfictions take this route. There are also those that focus on his character development in a more realistic way within the context of the Bleach universe and don't make him overly powerful.
Maybe it has the ability to absorb chakra. So when Naruto is in a fight against an opponent with a large amount of chakra, he can use the sword to drain some of that chakra, weakening the enemy while strengthening himself. The sword could then store that chakra for later use, like to boost Naruto's own attacks.
It could be a sword that can cut through any substance, like the Susanoo easily. Just imagine Naruto swinging it and slicing through powerful jutsu defenses as if they were paper.
One popular one is 'Solo Leveling'. In this manhwa, the main character has a sort of game - like system where he levels up and gains new abilities as he progresses through various challenges. It's really exciting to see how he uses the system to become stronger.
One possible aspect to consider in 'natsu overpowered fanfiction' is how it changes the power dynamics within the original story's universe. If Natsu is made overpowered, it can lead to different plot developments. For example, battles that were originally challenging might become one - sided, which could either make the story more exciting as we see Natsu's dominance or less engaging if the conflict is too easily resolved. Also, it might affect the relationships between characters. Other characters may start to view Natsu differently, either with awe or envy. This can create new story arcs centered around these changed relationships.
Captain Marvel has impressive abilities, but whether she's overpowered is subjective. It varies based on the comic's plot and the opponents she's up against. In some cases, she might seem too strong, but in others, she faces tough opposition that balances things out.
Well, in some fanfictions, Naruto might obtain the overpowered sword through a mysterious inheritance. Maybe it was left by a powerful ninja from the past and Naruto discovers it in a hidden cave or something.