After Binding to the Slaughter System, I Went on a Killing Spree

[Transmigration + System + decisive killing + satisfying power fantasy + multiple love interests + no saintly protagonist]

(Main character's motto: Keep a low profile when weak, kill without restraint when strong.)

Luo Shang transmigrates to a fantasy world and binds himself to a Kill-to-Level-Up System.

All he has to do is kill to raise his cultivation!

Kill, kill, kill! If someone rubs me the wrong way, they're dead!

My enemy's daughter tries to seduce me? Kill her!

The royal family tries to recruit me? I'll wipe them out! Why bother with all that? I'll take the throne for you!

People from the Spirit Realm look down on me? Oh, the King of Hell has arrived! Die!

Years later, Luo Shang proves his Dao through killing.

“I am the ruler. Who's with me? Who's against me?”