Level Up Haneun Musin-nim

The greatest martial artist on the continent and the supreme Martial Emperor who unified the martial world—Suhyeok. He had achieved everything, yet a lingering emptiness in his heart remained unfulfilled by his yearning for family... In the end, he crossed dimensions using the power of sorcery, but what lay before his eyes was...

"I was in a coma for five years in a hospital!? And what's with this system window floating in front of me!? Black Sage, you big-mouthed bastard! You said you'd send me back to my world! Why the hell is everything so messed up!?"

During the five years he lay unconscious, his family had been struggling to pay his hospital bills... "For my family's sake, I need to make money—fast and a lot of it." The strongest Martial God of the Hwan Continent, Suhyeok! Now Awakened, he begins his journey to level up.

(Source: KakaoPage, translated)