(Good) One Punch Man

Series in one sentence:
"Best OC - do not steal" gets his own series.

Series in more sentences:
A young man who once had the drive to become the greatest hero of all time has reached his goal, but finds that having godlike strength makes life quite boring. While his powers and good deeds are glanced over by the people he tries to impress, other heroes and villains are quick to recognize his strength; one of them being a cyborg with a typical backstory, who wishes to be his pupil.
 

It's been over a year that I watched this, what a ride it was. I've never seen a show take itself so seriously and not seriously at the same time, but it managed to find the right balance, that's a talent by itself.

The series comments on the silliness of comic book characters in general and does so in an entertaining way, I loved it.