Underworld

A thousand-year-old succubus, tired of devouring men, invents a new spell to grow more powerful — by kidnapping students and forcing them to level up in her Underworld. Elorion is just an average high school student when a monster kidnaps him and nineteen others. They are given the ability to use magic and level up, but there's a catch: with his dormant talents unlocked, he must grow in power to please his new master. To level up he must face the monsters of the Underworld. If he doesn't fight, he will die. But if he does fight, will he survive?

Surviving Lord Darius's attack pushed Elorion's level over the top. He must now leave the Mistress's Labyrinth for the unknown dangers of the Underworld. Three paths stand before him: absorb all the Blue Magic he can find, power level his fellow captives, or take on the bone palace alone. The Underworld is waiting.

After coming face to face with death, Elorion and company have found a dungeon to call their own. But Mistress Nava is still out there and her captain is now on the hunt, while an army of minotaurs poses the greatest threat they've yet faced. With new freedom comes new dangers: they're running low on food, the dungeon is in disrepair, and they must find new hunting grounds to grow in power. As their chosen leader, Elorion must decide whether to weaponize their dungeon, develop his party's strengths, or seek ancient power from the forgotten depths.

The minotaurs are dead. Mistress Nava is coming. Elorion searches for the power to face the impossible, racing to find what he needs to save his friends, Aeris, and himself.

After surviving Mistress Nava's wrath, Elorion is banished from Sanctuary and everything he holds dear. He finds himself on an impossible quest to retrieve something from Lord Darius's vault for the Head Mistress — the only hope of bringing everyone back together.

Passing through the Vampire Gate, Elorion enters the true heart of the Underworld for the first time. The sooner he completes his mission, the sooner he and the girls can return home. The task is impossible at his current level, so he follows the lich down the only viable path — one laden with bodies and blood.

Elorion is back from the vampire realm, and Aeris and the girls have returned from training. The Head Mistress kept her word and kept them alive — but joining the succubi has gained Elorion and Aeris only an illusionary freedom, and it will come at a heavy price. There is no safety without power, no future without strength. Soon they'll be leaving for the succubi capital. Sanctuary must progress or be abandoned.

Elorion's eyes are opened as he visits the succubi capital. Are they monsters? Victims of an ancient magic? Or are they just misunderstood? War is coming. Lilith's human experiment is finally revealed. What will Elorion and Aeris do when face to face with the real players of the Underworld?