MTL - Demon Slayer: The Beginning of the Game Opens the Way of Reward for Diligence - Chapter 8

Cultivating his power by slaying demons and taming countless beasts, the emperor solidified his throne as the world's ruler. But not once in his life had he expected that his disciples would use research on demonology to sap the world tree's power and push the world to destruction.Trying to fix his mistake, he opted to use all of his cultivated power to cure the world tree and block anyone from sapping its power ever again. But in exchange, he was to lose all of his power.But...the worst had happened, his wife... had betrayed him.

Batman: “You can't deny that your brother, Superman, brought about Zod. The two of them battled and nearly destroyed half of Metropolis. Countless people perished in that disaster—do you want to take a look at the list of casualties that could drown a person?”David: “He was adopted.”The Flash: “Why don't you step up like your brother and lead the heroes on the front lines to protect the world?”David: “I don't possess the same kind of power as he does.”Wonder Woman: “Are you saying that when Superman was punched by Doomsday, you would've gone up there and given Darkseid a round of military combat?”...Transcending into the DC world, David finds himself becoming the newborn son of Superman's foster parents, gaining the Thanos template at birth. Moreover, by influencing the emotions of plot characters, he can accelerate the fusion of templates and unlock new ones?The Hephaestus template—loaded. The template of a million stellar sentinels—loaded! The template of the divine Celestial Arbiter Arithm—complete Phoenix Force template, Golden Planet Devourer template...

Yi Tianyun woke up from a sleep, and found that he awakened this Upgrade System. Crippled meridians preventing you from cultivating? No problem! With the Crazy Upgrade System, do quests, kill monsters, devour others' Spiritual Power, or refine some Elixir Pills, inscribe great arrays, and you can gain experience!Experience Value is too low? Don't be afraid, I have Double Experience Cards, Tenfold Experience Cards! Experience Value will explode, explode, explode, and levels will rise, rise, rise!“Huh, I've leveled up again?”

It was in the year 2800 of the Midgard calendar. Back then, there was a Overlord who once reigned supreme and had reached the very brink of subduing the world.