"Saitama's easily taken out a number of monsters, including a crabby creature, a malicious mosquito girl and a muscly meathead. But his humdrum life takes a drastic turn when he meets Genos - a cyborg who wants to uncover the secret behind his strength!" -- Back of book

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! An emergency summons gathers Class S heroes at headquarters ... and Saitama tags along. There, they learn that the great seer Shibabawa left the following prophecy: "The...

Class-S hero King is known as the strongest man on earth, but when a mysterious organization sends an assassin after him, the shocking truth about King is revealed

"Hero hunter Gato intensifies his onslaught, so of course Saitama decides now is the perfect time to join a combat tournament. Meanwhile, Class-S hero Metal Bat takes an assignment guarding a Hero Association executive and his son, and before long trouble appears!"--Provided by publisher "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 gets pretty boring when you beat the snot out of every villain with just one punch. 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! At the martial arts tournament, Suiryu of the Dark Body Art shows promise with his...

"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! The monster Goketsu appears at the martial arts tournament, and in an attempt to turn its participants into monsters, he gives them monster cells. Tournament champ Suiryu...

"Surrounded by heroes, Garo finds himself in a tight spot. But despite the great numbers, he defeats the heroes one by one with his unmatched strength until Genos comes rushing in! Meanwhile, Saitama is reaching the height of irritation in his own battle..."--Provided by publisher

"Life gets pretty boring when you can beat the snot out of any villain with just one punch. 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!... Immediately before the big Monster Association battle, the Class-S heroes discover...

"Child Emperor uses his trump card, the robotic Brave Giant, to fight against the reincarnated Phoenix Man. However, his enemy easily counters this last-ditch attempt, brushing Brave Giant off as a mere toy. When Phoenix Man then evolves into an even stronger monster, Child Emperor's conviction is shaken. Does this spell the end for the clever child hero?"--Back cover

"The dangerous monster that can't be cut, Evil Mineral Water, confronts Bushi Drill, Okama Itachi, and Iaian. Meanwhile, Saitama runs into the giant demonic dog Pochi, and Terrible Tornado launches into an epic supernatural battle against Gyoro-Gyoro!"--

As the fight against the Monster Association big shots heats up, Class-S heroes find themselves locked in a desperate struggle, but Tornado is closing in on Gyoro-Gyoro's main body! Meanwhile, Blackluster confronts Garo, while Saitama wanders the labyrinth where the Monster Association is hiding"--