[Dark tone + no official pairing, ship whoever you like + invincible in the middle and late stages + pseudo-infinite flow + small ensemble cast]
(PS: The protagonist gradually unlocks advanced uses of his abilities and new permissions. The early chapters are a slow burn with plenty of groundwork; he becomes invincible after the ninetieth chapter or so, so you can jump straight to Chapter 95. No idiotic characters or brainless decisions. The protagonist has a dark, chaotic-self-interest alignment, with thrilling mind games, tightly crafted worldbuilding, and mythological elements.)
“My name is Xu Linghua. Of course, you can call me a brute or a degenerate. It doesn’t matter anymore, because I am the ‘Emperor,’ the most absurd ruler in all of history.”
“Fame, power, wealth, and desire are all like passing clouds to me. Whoever stands in my way will be punished. The first step in my game of conquest: seize planet Earth. In one month, I’ll conquer the world from scratch.”
That day, when despairing humanity looked up at the sky, the many divine kingdoms revered by the people fell. Drowned corpses swarmed beneath the surging tides; black flesh merged with machinery; countless prehistoric creatures awoke and emerged from their lairs; and dark shadows from the underworld kept invading… Earth was wiped out.