I am Saitama.

I live in a world which is just like your world, except one little detail:

it is terrorized by villains and monsters.

Also, I am a very normal guy,

except one little detail:

I happen to be the

strongest being of the universe.

However, it wasn't like this from the beginning. I used to be a normal person, just like all of you. I worked out a lot and it was worth it. I got stronger. But there were side effects.

I can finish even the strongest opponent with only one punch, I got invulnerable and...

I went bald.

In case you are wondering,

I am 25 years old.

If you think I am exaggerating, this happened 20 minutes ago.

The earth started shaking and I knew: a monster is approaching. And, judging by the intensity of the tremor I knew that it's only a medium sized villain.