The Divine Demon’s Grand Ascension

A brief description of the manhwa The Divine Demon’s Grand Ascension:

While Bu Eunseol was still young, he lost his grandfather to a mysterious killer.
For revenge, he will devour the martial arts of the ten demon sects and endure countless bloodshed to become the strongest.
“I will find you, and I will kill you.” Now, in the heart of where all demons reside, the divine demon awakens.

[By the Studio that brought you <The Bastard of Swordborne and Emperor of Steel>