"Class-S hero King is known as the strongest man on earth. Even monsters fear him. But when a mysterious organization sends an assassin after him, the shocking truth about King is revealed!"--Page 4 of cover.

Saitama is now a certified hero! And with that title comes great responsibility-he's required to perform one heroic deed per week. While Saitama makes the rounds to meet his quota, an incoming threat from outer space is screeching toward Earth...

"Nothing about Saitama passes the eyeball test when it comes to superheroes, from his lifeless expression to his bald head to his unimpressive physique. However, this average-looking guy has a not-so-average problem--he just can't seem to find an opponent strong enough to take on! For three years, Saitama has defeated countless monsters, but no one knows about him...That's because he isn't in the Hero Association's registry! Together with Genos, Saitama...

"What happens when a superhero can beat the snot out of every villain with just one punch? Can he find an opponent to give his life meaning, or is he doomed to a life of superpowered boredom? Nothing about Saitama passes the eyeball test when it comes to superheroes, from his lifeless expression to his bald head to his unimpressive physique. However, this average-looking guy has a not-so-average problem he just can't seem to find an opponent strong...