MTL - Doomsday Home is the Most Stable - Chapter 13 Gene Optimizer 1.0

The entire planet was dragged into a mysterious space known as the “Civilization Trial,” with various apocalyptic trials following one after another. The crisis began with a parasitic threat, parasitic monsters silently replacing humans, and no one knew whether their relatives, friends, or comrades-in-arms had been masquerading as monsters. As everyone was steeped in deep fear, Shen Hao stared blankly at something extra that appeared before him. [Civilization Trial Cheats Collection] Begin with a mandatory draw of a Red Mythical Talent, friend-or-foe marking map, loot box probability adjustment, points acquisition multiplied by a hundred... Monster: “Run! This civilization is cheating!!!”

He used to think Death was the end.He was wrong.Death was but another beginning, a new adventure.Reborn into this strange and familiar world, he should have been dead, his soul fading into nothingness, but he found himself in a completely new existence. Now, as a Primordial instead of a human, he must find his place in this wondrous world.

Earth was supposed to be a safe haven.And for a time—it was.Until one night, golden stars lit up the sky like cosmic flames. The heavens swirled, the winds howled, and the world braced for its end. But just as quickly as it came... the phenomenon vanished.Weeks later, everything changed.Humans began to awaken powers once thought to exist only in fantasy. Skills—mystical, world-shaking abilities. Some used them for good. Others unleashed devastation.What could a gun do against a man who could turn into a living bomb?Portals tore through the sky, connecting Earth to monstrous realms. Beasts, demons, and nightmares poured into the world. Amid the chaos, powerful humans rose to fight back—and won. The survivors called them one thing: Heroes.Among them, one boy was left behind.Han Trystan—orphaned during the Sendok Calamity—carries the burden of rebuilding his parents' legacy, protecting his three younger siblings, and finding a cure for his dying aunt. But all of that hinges on one thing: awakening a powerful Skill.And when his time finally comes…> Name: Han TrystanSkill: Book FormationRank: EThe lowest rank. A joke. Practically powerless. Hope? Shattered.Until Han discovers the truth.His skill isn’t “Book Formation.” It’s something far greater.Creation. Not just of weapons or armors. But artifacts, pills, barriers—even other Skills.The world labeled him weak. But he was never meant to follow their system—he was meant to break it.Years later…> “Did I see that right...?”“Yeah. He just wiped out hundreds S-Rank monsters—alone.”“So the title ‘White-Black-Haired Monster’... it wasn’t exaggerated after all.”In a field of fallen beasts, one man stands untouched. Eyes calm. Power immeasurable.> “Weaklings.” Han mutters.Follow Han Trystan’s journey from the lowest-ranked misfit to one of the most powerful beings in the multiverse—and witness the rise of a legend the system tried to erase.

This is the story where Urahara Kisuke died after Nel failed to save him inside Askin’s Gift Ball Delux and reincarnated in the world of DxD.

I am not sure if I can capture Urahara’s character properly so I apologize in advance if you are not satisfied.

Also, English is not my native language.

I don’t own any of the characters from the canon.