Harry Potter: Ero World - Chapter 87: Infiltration gone Wrong!

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

Well-known Composer Fang Zhao was in the glorious stage of his career, when the Apocalypse arrived; After finally experiencing the bitter difficulties of a thousand dangers, when the Apocalypse was simmering down to an end, he collapsed; When he opened his eyes, he was reborn in a New World, 500 years after the end of the apocalypse, in the body of a student who had been dumped barely after graduation, who had been cheated of his hardwork barely after he started working…

※ This book contains coercive relationships and violent scenes. Please be aware before proceeding.※ The names, locations, and characters mentioned in this book are entirely fictional.The calculation method of gamblers is truly peculiar.They lend money at exorbitant interest rates to those who haven’t even spent any money as collateral.For 15 years, Hongju has been collecting debts from housemates while being tied to collateral.One day, a man appears, claiming he will invest in the house.A rich fool, a money tree.The housemates called him Mookyung.“As long as you do as I say, I’ll help you.”Mookyung makes a suspicious proposal, offering to repay the debts in exchange for house information.Why would he make such a proposal to a debtor who is already struggling?Still, there is suspicion about him…“Do you think I’m a swindler right now?”“No.”“You shouldn’t. It’s all too obvious. Swindlers can tell just by looking.”Hongju has no choice but to accept that proposal.Growing up on scraps, he knows exactly where to stretch his legs.

In the current era, people are either normal or are with ‘special abilities’. Cases related to the latter are managed by the “National Anomaly Prevention and Control and Special Species Management Office”.
Qi Zheng Emperor Sheng Lingyuan was reawakened a thousand years later after he jumped off the fiery Red Lake. Xuan Ji, a newly transferred staff to the Reparations Division of the Deviant Control Office, finds himself having to clean up the mess of a revived tyrannical monarch. The two seemed to share something from the past, but unbeknownst to them, a big conspiracy is stirring right underneath their noses that could destroy the balance of the world.

- Description from Novelupdates