NamhyeBlueMoon

Han Seojun was a loser, frail and barely more than skin and bones from a life of poverty, was raised by his hardworking mother with no knowledge of his father. At 18, he inherits the Ancient Infinite System, a power passed down for generations from Goddess Zyraena, The Former Echidna (Goddess of Monsters).

The system transforms his weak body and improves their lives. Just as Seojun is about to take his dream veterinary exam, he's suddenly summoned to the Abyss Realm, a brutal world where only the strong survive.

After 500 years of battle (About 69 Chapters) Seojun finally took back the Realm and returned to Earth. 

Ding!
[Congratulations Host! You have max your level! LV. 999,999]

Ding!
[You have obtained a Hidden Class: SSS-Rank Abyssal Tamer.]

[Title Acquired: Lord of the Abyss]

But the world had changed. Dungeons and monsters are rampant, and people now possess skills and classes granted by a system called global system Where Earth transformed A Game into Reality.

People granted is known as the Awakeners and Seojun, protected by his Infinite system, rejected the global system. 

With the world so different, Seojun then took a role of a professor to live peacefully but instead obtain a hidden profession. 

Ding! 

[Congratulations! You have obtained SSS-Ranked hidden profession transcendent mentor!]

First task: Select one Non-awakened student.

Infinite System Inheritor Return From The Abyss

Lila's grip on her pocket tightened, her jaw clenched. Andrew and the siblings immediately stepped in front of her, forming a protective wall.

Their faces were serious, their stance ready for whatever their group might try.

He burst into laughter, holding his stomach as if he'd just heard the funniest joke in the world.

"What's so funny, you asshole?!" Andrew snapped, taking a step forward, but Lila grabbed his arm.

"Stop it, Andrew," she said firmly.

"Why, Lila? This guy's been annoying since earlier! Someone needs to shut him up!" Andrew protested, trying to shrug her off.

"Shut up, Andrew," Lila hissed. "You can't handle him. He's baiting you, trying to make you lose control. That's how Moss plays."

Andrew froze, glancing back at Moss, who wore a smug grin. "Hey hey," Moss said, wagging a finger at Lila. "That's no fun. Don't give away all my tricks."

"Annoying," the siblings muttered in unison, glaring at him.

Chapter 208: We'll take it no matter what