Atlas of Heaven and Earth - Chapter 35: An Unusual 1 Day of School

King Grey has unrivaled strength, wealth, and prestige in a world governed by martial ability. However, solitude lingers closely behind those with great power. Beneath the glamorous exterior of a powerful king lurks the shell of man, devoid of purpose and will. 

Reincarnated into a new world filled with magic and monsters, the king has a second chance to relive his life. Correcting the mistakes of his past will not be his only challenge, however. Underneath the peace and prosperity of the new world is an undercurrent threatening to destroy everything he has worked for, questioning his role and reason for being born again. 

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.

Wei Ji never dreamed of immortality or ruling the heavens or having the greatest strength. All he wanted was a sect he could call family — a mark he could leave in this world of Immortals before he dies.But no matter how hard he fought, no matter how many sects he built or rebuilt, the Celestial Demon Empress always came. No matter how high his sects rose, she found them… and burned them to ash. Even at his peak, Wei Ji could not last even a second against the newly appointed general under her command.On the edge of despair, he casts his soul into the river of time, hoping to return to Earth and escape it all.But fate is cruel. He awakens five thousand years in the past — in the mortal world of the Celestial Demon Empress.And the cruelest twist?The woman destined to become the Celestial Demon Empress… is now his wife.

A master assassin transmigrates into an interstellar era.

Other players were responsible for competing in the e-sports arena, while he was responsible for stringing up and beating up the other players.

His sword was hidden during the peak of day, and he was a gentleman who arrived in a flash of light;
As a vanguard of the eternal night, he was the variable between life and death in the world.

“As you know, the Star League’s difficulty levels are arranged in this way:
Paradise < Simple < Normal < Difficult < Nightmare < Hell < [Tyron Odin]”

- Description from Novelupdates