Hard Work Brings a Hundredfold Reward: I Slaughter My Way Through Another World

(Hardcore protagonist + decisive and ruthless + siblings united + System + races vying for supremacy + no saintly hero)

From the start, he gets a System that gives a hundredfold return for every bit of effort.

He thought he was about to take off on the ride of his life, but disaster struck: his younger sister had her cultivation crippled, was expelled from her sect, and was hunted down.

Jiang Ming awakened.

This world is unjust. The myriad races stand in ranks, oppressing humanity, while humanity's leaders do nothing and low-level martial artists have no way forward.

Then I'll have no choice but to rely on my own efforts and kill my way through this otherworld!

What? The items I get from killing enemies all yield a hundredfold return!

Jiang Ming unlocked a new use for the System.

You say you're a once-in-an-eternity genius?

I'm sorry, but in this world I'll show you that talent is worthless in the face of hard work.

Talent is just the entry ticket to stand before me.

Through endless ages... At the peak of eternity, a demonic shadow looms over all worlds. Countless powerful beings' bones form a ladder through the shattered river of time, for all living things to climb in reverence.

My name is Jiang Ming, but I prefer what the world calls me:

The Supreme Demon Lord of the Unfettered Dao!

My name is Jiang Xiyue. From the start, I was framed by a wretch, had my cultivation crippled, and was expelled from my sect.

But I'm not worried at all, because I awakened an innate demonic soul and even got myself a kindly old granny.

Heaven's mandate is mine!

Huh... Why is something off about my brother?

A name across all worlds, reserved for one person alone.

Many years later, I learned that the person wasn't me. This world has no chosen one, only the Demon Lord.

Luckily, the Demon Lord is my brother.

This life won't be hard!