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

A loud explosion suddenly shook the air, causing the entire cabin to tremble violently. The wooden walls creaked, dust falling from the ceiling.

"What the hell was that?!" Andrew shouted, his eyes darting around as he instinctively stood up.

"The whole cabin's shaking!" Kaye cried, clutching Kyle's arm tightly.

"This isn't good—it feels like it's going to collapse!" Kyle added, his voice tense.

Andrew didn't wait. He crouched down, scooping Lila onto his back. "Let's get out of here, hurry!" he urged.

Without hesitation, they all ran outside just as the cabin let out a groaning noise, collapsing into a pile of wood and dust behind them. They shielded their faces from the debris, coughing as the dust settled.

"What is going on?!" Kyle yelled, looking around. The trembling of the forest had stopped, but the air was still heavy with tension.

Chapter 212: Four hours left