Muzan Is Still Being Forced to Do Good Deeds Today

For the sake of a better, more peaceful world, the Saintly System approached Muzan Kibutsuji, who was still being tortured in the underworld, and invited him to help build a wonderful world.

Muzan Kibutsuji: Huh? Is something wrong with your head?

Muzan couldn't understand a word of the System's ridiculous theories and sneered at them. But as he looked at the boiling oil, remembering that he had only made it through forty-nine rounds of frying halfway, with so many more tortures still to endure, clever Muzan gave in and accepted the System's invitation. He would go to a new world and spread love and peace.

World One: After becoming a vicious vampire, Muzan was dazed for a while, thinking he had been reborn. Then humans attacked him, willing to push themselves beyond their limits just to kill him. He barely managed to escape back to the vampire faction, only to discover that he was despised by his own kind. The other vampires looked at him with contempt, as if he were a bug, and everyone gave him a wide berth.

If he accidentally got in the way of a high-ranking vampire, they would rip off his limbs and toss him aside like trash.

Muzan: You damn...!

System: You have to win them over with love. No matter how they hurt you, you must believe that one day they will be changed by you. Remember your character: We are saints!

In front of all the vampires, Muzan declared that vampires should live peacefully alongside humans, and that one day he would develop a way for vampires to survive without human blood.

Ferid was a total troublemaker, and he was particularly malicious toward Muzan. He brought a blond human child he had been keeping to Muzan, eagerly anticipating the disgraceful sight of Muzan revealing his true nature. But Muzan would rather cut open his own wrist and drink his blood to stave off his thirst than hurt the child.

He actually managed to resist his most primal urges. He watched himself grow weaker day by day, and even nearly died in a human attack, all while enduring everyone's ridicule and mockery as he preached theories no one would listen to. He became the vampires' sole outlier, a weirdo who spent all his time trying to figure out how to bring peace to the world.

In the end, he really did develop a liquid that could replace human blood. But after years of harming himself, his body was so damaged that he faced the prospect of disappearing.

Muzan himself prepared to drift off to sleep: At last, I can leave. After researching the Blue Spider Lily for a thousand years, I never want to see anything about research again...

Mikaela tried to carry him to the vampire progenitor for help, but Ferid snatched him away and whispered in his ear, "So what if you developed a liquid that replaces human blood? The First Progenitor still wants to remake the entire world. Humanity will still be destroyed."

System: Detected that the world's crisis has not truly been resolved. Extraction temporarily halted!

Muzan:!!! Ferid Bathory! You did that on purpose, didn't you?!

World Two: Muzan transmigrates into a wicked, murderous member of the Black Organization. For world peace, he tries to persuade Gin to turn the organization into an ethical business...

World Three: Muzan transmigrates into a senior executive serving under the former leader of the Port Mafia. Faced with the tyrannical, bloodthirsty old leader, he tries to persuade him that a leader should take the initiative to build Yokohama into a world-class city...

World Four: Muzan transmigrates into a young member of the Zenin clan, one of the Three Great Families. He spends all day declaring that non-sorcerers aren't human, but then shocks everyone by joining Tokyo Jujutsu High as a teacher and trying to reform the place...

The later worlds are still undecided.

Theme: Learn from Lei Feng and be a good example