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"--

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...

"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...

"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!"--

"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! To stop a Demon-level crisis, Saitama and company head toward the action. However, even Class S heroes prove to be no match for the Deep Sea King! In order to protect the...

After finishing a martial arts tournament and dealing with the Monster Association invasion, Saitama asks King for advice on how to live like a hero.

"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...

"Garo has just left the Monster Association's hideout when he crosses paths with Saitama, who's in quite a pickle, but Saitama still doesn't know Garo is the Hero Hunter. Later, King the Ripper can no longer hold back his murderous urges and confronts Garo himself"--Provided by publisher.

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?