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

Nayta and Melina were first speechless, then their faces turned serious as they faced the smiling Lilith.

"Really? Can we finally learn spellcasting from you?" Nayta asked, expectation laced in her words.

"Yes, of course." Lilith nodded joyfully. "After all, Melina here almost died from using the spell I taught her without practicing."

Melina's face turned sour as she shifted her gaze away. After all, that even happened not too long ago and was still vivid in her memories.

"Well, I'm just kidding, but with her example, it is obvious that learning spells and trying them halfway without properly knowing what their effects are could lead to fatalities at worst."

Although she still had her joking tone, the contents of her words couldn't get any more serious. Hearing this, the mother-daughter pair quickly sharpened up and stood in attention. Lilith noticed the slight change in their attitude and nodded in approval.

Let's Get a God's Approval!