SeraphWedd

In the year 2025, for unknown reasons, dungeons started appearing all around the world. Monsters started invading nearby cities and massacring the citizens. The world population was dropping by the millions each day. To fight against the monsters, the whole world decided unanimously to create genetically modified human beings called "Warriors" by injecting a serum they called "Elixir". Thus, started the counterattack of the human race.

On a certain day 12 years after the start of dungeon appearance, while raiding the last and hardest dungeon in the world, an event occurred. After getting betrayed by his teammates, Warrior Ein was pushed down a bottomless pit just before facing the last boss as a sacrifice. Regret filling his heart, he cursed at his former teammates, swearing to take revenge against them before losing consciousness.

However, when he opened his eyes, he found himself as a dungeon master in a new world. Since he will die if the dungeon gets conquered, he decided to protect his dungeon from invaders while searching for a way to return to Earth. Will he be able to return to Earth and enact his revenge?

I am a Problematic Dungeon Master

Lilith, mustering all the powers she could in her current state, rushed towards Samael. She first used her beloved cursed sword, which appeared within her grasp in an instant, and slashed at him with all the mana she could muster to power it.

However, Samael just used the tip of his index finger to completely block it. His hand didn't even shake after receiving the blow, showing the disparity in their strength.

"Don't look down on me!" Lilith roared as she let off a kick, aiming for his head.

He looked at the incoming attack and just let it land. The hit didn't even make him blink his eyes as the sole of her boots hit him squarely on the nose.

Samael ignored Lilith's attacks and stared down at the blue-green barrier that covered the dungeon. He then waved his hand again, sending a powerful wave of mana toward it.

If Only I Was More Powerful