A man who died due trying to upperhand a criminal got a second chance to live. He was reincarnated into the world of One Punch Man, one of his favorite anime. As he continue his life there, he encounter with the character he knows and even the chara...
The S-Class heroes has been gathered together in order to face a threat which possible can bring end to the very Earth itself. During the meeting, Sky King and his sons, attack the Hero Assocation HQ at A-City, but they are killed as soon as another threat come to Earth; the Dark Matter Thieves. And so, the heroes engage combat with the invading aliens. The news about the alien attack has spread across the whole world, and the people can only watch and hear about the news, praying that the heroes can stop the alien invasion.
(A-City) (Dark Matter Thieves' Battleship)
Inside the battleship, Saitama have infiltrate into the ship and attacking it from the inside.
(Command Center)
At the command center, a blue octopus like alien is pissed seeing how the ship has been infiltrated and many of the crews has been killed.
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Geryuganshoop: Th-This can't be happening! Even Groribas, our best warrior, is defeated?! What manner of creature is he? And how'd he get aboard? Damn it! Melzargard was supposed to be guarding the ship! Where did Delta and Andamite have gone to?! Where did that damn demon that our master have summoned to assist us?! They and I are the only elite fighters left! I bet they're just mucking about... When I really need them! Curse them!
???: Geryuganshoop.
Walking into the command center, he is the said strongest being in the universe and the leader of this pirate crew.
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Geryuganshoop: *turn around* A-Ah! Boros-sama, I am terribly sorry. I've allowed one of the natives to infiltrate the ship. In the mere four minutes since coming aboard, he has damaged 23% of the ship. It seems he is alone, but he managed to instantly kill every warrior sent to intercept him.
