The Flash is often considered one of the fastest speedsters in fiction. He can run at super - human speeds, allowing him to do things like vibrate through solid objects, run on water, and travel back in time. His speed is so great that he can outrun almost any opponent in the DC Comics universe.
It's hard to determine a single fastest speedster as it varies across comic storylines. However, popular contenders include characters like Quicksilver and Zoom, each with their unique speed abilities and feats.
Among the speedsters in DC Comics, many consider The Flash (Barry Allen) to be the fastest. His speed powers are legendary and he's been at the forefront of many speed-related storylines.
If Karin had Kryptonian abilities, her confidence would likely soar. She could become more assertive in her actions. For instance, with super strength, she would no longer be as afraid in combat situations. Her character might also become more isolated at first as she tries to figure out her new powers on her own, not wanting to endanger her friends. But as she masters them, she would be more open to sharing and using them for the good of the group.
Naruto could use his chakra control to enhance his Kryptonian super speed. For instance, he could focus chakra on his legs while using his Kryptonian speed to move even faster and more stealthily. Also, his shadow clone jutsu could be combined with his Kryptonian powers. He could send clones with super strength or heat vision to attack enemies from different directions.
In 'naruto is a speedster fanfic', Naruto's speed often gives him an edge in combat that's different from the original series. For example, he can dodge attacks more easily and launch surprise counter - attacks.
I'm not entirely sure as it's not a very common or well - known specific genre title. It might be a fanfic related to speedsters (like the Flash in DC Comics who are known for their super - speed) with some unique or specific 'kink' which could be an unusual or specialized aspect of the story, but without reading it, it's hard to say exactly.