Looking for anime that are like/similar to this:

I'm planning on watching more anime, but I'm for a specific kind. I'm looking for an anime in which the protagonist is a male that's in his 20s, and has some awesome power/is is a superhuman/is really good with guns, etc. But everyone else is normal (For the most part) Do you know any that're like this?

Looking for anime that are like/similar to this: