Doomsday Lord - Chapter 277:

Gojo Satoru always knew he could travel back in time whenever his life was in danger. After surviving betrayal, the battle at the Prison Realm, and his fight with Sukuna, he realized he needed a fresh start. When he opened his eyes, he was sixteen again—his first day at Jujutsu High. Nothing had happened yet. This was his chance to change everything.But something was wrong. Geto Suguru was missing.Gojo searched all of Tokyo but found no trace of him. Then, a year later, during a mission near Shinjuku Station, he spotted a familiar face—a boy with a bun and strange bangs.Gojo’s heart raced.Geto Suguru: “Who are you?”

One day every human on the world suddenly receives a mail claiming to enact the World Salvation Project. Half in doubt Kurosaki Shion, a diligent university student and loner, follows the mail’s instructions, becoming one of a million Demon Kings governing his very own Domain in the new world.

*** This is a post-apocalyptic story containing many fantasy elements. It is a somewhat dark tale following Shion as he grows while aiming for the unification of the all too sudden new world. It has many game-elements bolstered by strategical thinking while at the same time providing funny moments and romantic encounters.

When a boy in a medieval fantasy world wakes up with the memories of his past life, he discovers a secret buried deep within his mind—a highly advanced AI companion. This AI, a relic of his previous existence, holds the knowledge of a futuristic world filled with technology, science, and innovation.Armed with this unprecedented advantage, the boy embarks on an extraordinary journey to transform his medieval surroundings into a thriving futuristic utopia. From reinventing agriculture to creating advanced cities, he introduces ideas far beyond the comprehension of his peers. But his vision isn't without challenges—power-hungry nobles, skeptical commoners, and ancient magical forces stand in his way.