The supporting character's harem is very normal - Chapter 472 Meeting Amleth

Bai Wu suddenly gains the ability to see the success rate of events in the real world. After experimenting with buying lottery tickets, he realizes the extent of his superpower.Thus, a lucky “Prince of Fortune” who succeeds in everything he does is born! A single antique trade turns him into a multimillionaire overnight.A casual blind date makes him the object of affection for two beautiful women.A random visit to a street market propels him into a massive fortune of 2.5 billion!With his extraordinary ability, he steadily ascends to the pinnacle of life!

They love gold, and they love silver. Even more so, they love gems that dazzle, like stars across the skies.
Firearms, jewelleries, and precious metals; A collector’s world will not be complete without antiques.
Storage auctions, old goods trade, re-estate sales and gold-digging. But the truth is, if one wants to make money, then the supreme way is through searching for the legendary treasures.
Holding the fort, there’s an ocelot, a wolf, and an Andes condor. At the side, there’s a loyal hound, an irascible ape, and an African honey badger. Who said that you can only rely on humans when treasure hunting?!

- Description from Novelupdates

How long will it take for a murdered thief to distill into something monstrous? In this story the darkness only grows stronger, and its reach only grows wider as it expands by devouring the life that surrounds it. This is a dark fantasy where evil is a where, not just a who that focuses on slow progression, undeath, and atmospheric storytelling.

I finally managed to kill the demon lord.