The Earth is Online - Chapter 217

The era of Universal Lordship has come to this world, bringing many opportunities and challenges for humans.At the age of eighteen, each person can acquire territory and participate in the Lord's continent, which will determine whether they can move into a vast world or die in mediocrity.Thousands of years after the start of this era Neo looked up at the sky waiting for his opportunity, the opportunity to change his life and move toward a grander goal.All lords choose an easy route and select a race that already exists but he wished to go against the current, so even if it was looked down upon he created his own race bravely and swore to fight tooth and nail for success.This is the story of his journey as he walks step by step toward a grander future.

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates

One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.