The golden age of the martial world ended the day the sky began to crack.

Across the Central Plains and the lands beyond, mysterious distortions appeared, and an unknown force swept across the world. Wild beasts and spirit creatures twisted into vicious demons and turned on mankind. Every martial artist suddenly lost the ability to wield internal energy. The Martial Alliance fell, and even the Five Great Clans and the Nine Great Sects and One Gang, including Shaolin, vanished into history.

The Heavenly Demon Cult was no exception.
Cheon Sowol, the sixth leader of the Heavenly Demon Cult, possessed peerless martial insight, yet was born with the Nine Yin Severed Meridians and could never cultivate internal energy.
Standing on the front line to protect the followers, Cheon Sowol fought without a trace of internal energy. Countless followers fell, and even the guardians and escorts who stood closest gave their lives.

At last, Cheon Sowol gave one final order to the survivors.
"Run. I'll hold them here."
As Cheon Sowol stood against the endless demon horde with nothing but innate genius, something impossible began to stir within.

The Heavenly Demon Soul awakened.

The Heavenly Demon must stand alone and protect the survivors.
1. Cut through endless hordes with automatic or manual combat.
2. Unlock and strengthen martial arts during battle, then evolve them to create your own build.
3. Use your martial arts to raise their mastery. Reach key milestones, choose one of two evolution paths, and transform them into entirely new techniques.
4. Allocate stats to strengthen your internal energy and martial insight.
5. Upgrade equipment from Normal all the way to Origin.
6. Collect Engraving Stones from Normal to Origin and socket them into your equipment.
7. Fuse lower-grade Engraving Stones to create higher-grade ones.
8. Gather souls and channel Heavenly Demons from other timelines.
9. Obtain Martial Essences and choose the martial art you begin each battle with.

Thousands upon thousands of enemies charge at once.
100 battlefields,
6 extreme challenges,
and a 999-floor endless battlefield.
Cut down every enemy that stands in your way.

Can the Heavenly Demon save the world alone?