Zombie Man was well aware that if he laid hands on Genus, those people wouldn't let him off. He would become an enemy to the entire world. But he didn't care. After all, he was already in this state, unable to die. He's just… a monster.
In the original work, he spared Genus, because Genus had turned over a new leaf, and is no longer engaged in those shady activities. Perhaps he could even help Zombie Man recover. But now things were different. Asahi, who hadn't lost confidence due to Saitama's influence, wouldn't give up.
For him, it was merely a change of location to continue his research. And he was still living a comfortable life.
Under such circumstances, Genus had no intention of regretting at all, so naturally, Zombie Man wouldn't spare him either. Using his S-Class Hero privileges, he went to find Genus, who was imprisoned in the Hero Association.
No one would have expected an S-Class Hero to attack Genus. But Zombie Man, the oddball, would actually do so. So when Genus saw Zombie Man, before he could react, Zombie Man's hand has pierced through Genus's heart.
Although Genus died, he left the method of eternal life. But Genus is also smart. He knew that once others got hold of all his data, he wouldn't survive. So he decisively kept some crucial information in his own mind.
These were his core data. Without these, although the previous data remained, it would be nearly impossible for others to research this critical point. Otherwise, why was Genus the only one to research this from ancient times to now?
Naturally, it was because there were things inside that others couldn't understand. It took him years to master this knowledge. Without these crucial steps, others would be completely lost. The parts Genus retained were the most critical.
But now, Zombie Man had killed him, so this secret became a permanent secret.
After killing Genus, Zombie Man knew he couldn't stay in the Hero Association anymore, so he immediately went on the run. From then on, he was destined to be a fugitive because he had stirred up trouble with the upper echelons. That trouble wasn't something he could easily handle.
"Zombie Man is really crazy! He actually went in and killed Kin'yo. Now, the secret of eternal life is lost. Even if some data remains, it will take a lot of time and opportunity for others to decipher it!"
Upon learning of this, Tatsumaki was shocked, as were other S-Class Heroes. Only the carefree Saitama didn't seem to care about it.
For Saitama, he didn't need eternal life. He just needed a strong opponent to fight. But unfortunately, he hadn't found such an opponent so far.
"Damn Zombie Man! How dare he do such a thing? What was he trying to achieve by opposing us? That damned bastard!"
The billionaires who knew about this incident were furious. Just when they thought they had the possibility of obtaining eternal life, it was suddenly cut off. It was more distressing than someone destroying their livelihood.
They say cutting off someone's source of income is like killing their parents, but cutting off someone's path to eternal life is far worse. It's like destroying their ancestors' graves and dancing on their ashes.
These billionaires jointly issued a bounty, and it was substantial. It stunned countless mercenaries and villains. They were eager to get their hands on this money, and they're willing to do almost anything for it.
The whole One Punch World was now in a frenzy to find Zombie Man. However, Zombie Man wasn't foolish. He had prepared a hiding place for himself. He knew what would happen after killing Genus, so he had long since prepared for it.
It is basically impossible for those guys to find him. The place where he hides is in the wilderness is similar to the previous House of Evolution. How can these people find him? Because of that, the matter has come to an end for the time being.
Not long after, the official plot of One Punch Man has finally begun. A monster named Vaccine Man attacked a certain city, but he was instantly defeated by Saitama who arrived later.
Saitama's speed was so fast that nobody even knew it was him. But after joining the Association, they gave Saitama a wristwatch. He wears it when he goes out, so they can track his movements and confirm if he's the one who killed monsters.
Since satellites can't keep up with Saitama's speed, they prepared this wristwatch to record Saitama's actions, so they can keep track of him.
After Saitama wore the wristwatch, the Association realized how terrifying he truly was. In just one day, Saitama could appear in dozens of cities based on the news reports, running around everywhere.
He basically slaughtered a bunch of monsters every day, ranging from low-level Wolf-level to high-level Demon-level.
It can be said that Saitama is truly terrifying. And this time, Vaccine Man was also directly punched to death by Saitama.
The strength of Vaccine Man after his transformation was basically at the Dragon-level, but it was done with one punch.
With more and more videos of Saitama killing monsters, hardly anyone dares to criticize him anymore. It's just asking for trouble.
Meanwhile, Asahi was also straightforward, giving some warnings to the Hero Association. These warnings were necessary. For example, the Giant Brother this time is no ordinary existence. If they don't deal with him, who knows what he'll become in the future.
The fighting power of the Giant Brother is also strong, and he easily destroys cities. In the original work, one city was directly destroyed after he leaves behind several huge footprints and being punched by Saitama.
So this time, Asahi gave this information to the Hero Association and let them figure out how to handle it.
When the Hero Association learned about the Giant Brother, they were also quite frightened. But in their opinion, this the scientist behind it was worth their attention. Although the potion he created was powerful and turned ordinary people into terrifying beings, it also had its drawbacks.
By becoming a giant, their fight in the city could cause much more destruction than the monsters.
Plus, drinking it would make the person's mind dull. So, it's not that attractive.
Compared to eternal life, while it's strong, its weaknesses are also very obvious.
In short, nobody liked it.