The worst and strongest villain.I became the narrow-eyed character Arsene Adel.\

One day, I woke up only find out that Iad become a Demon Lord, an individual responsible for protecting a dungeon. The world Iad 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 dungeonas defenses in hopes of living another dayaor at least that was what Iad thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.
This is Yukias story, my story. It tells the tale of how I spent my days after settling down in a dungeon with a self indulgent, asupremea dragon girl and a young vampire.

I got sucked into a novel full of villainesses, and taming them is the only way to survive!

Humans across the world ended up joining a aDemon Kings and Heroes gamea.
Several billion people were set down upon another world to act as aDemon Kingsa and aHeroesa.
Everyone has to chose their starting races from the start. Zhang Nu was set in the Demon King camp.
He discovered that he could see hidden information that no one else could. [Slime Demon King].
Low grade demon king bloodlinea|
Not recommended! [Kobold Demon King]. Low grade demon king bloodlinea|
Not recommended! [Dark Elf Demon King]. Mid grade demon king bloodlinea|
Can be selected! [Bloody Giant Demon King].
High grade demon king bloodlinea| Recommended!
[Abyssal Dragon Demon King].
Strongest starting bloodlinea| Extremely recommended!

aCompared to our time, the current generation just arenat as reliablea they said, aStill, isnat he the son of the Hero?a How annoying.
Itas been over ten years since the battle between mankind and the demons ended. The children of the heroes who saved the world are all grown up.
One of them, Earth, was a talented man, and everyone expected him to succeed his father as a warrior and defend his country, but Earth was always wary of his fatheras title.
One day, Earth is shocked to find his fatheras sword, which was used to overthrow the Demon King, sealed in his familyas mansion.
Because trapped within was the ghost of the Great Demon King who was unable to pass on and continued to roam the world.
For some reason, only he could see the spirit of the Demon King, and the Demon King possessed him through the sword.
Every day, forced to coexist with the spirit of the Demon King, they live a strange shared life, when the Demon King whispers to Earth on a whim.
aI have a grudge against your father. If you want to get back at your father and the world, Iall train you. Iam free.a
Earth receives special personal guidance from the Demon King just to get back at his parents and the world.
Then, in the coming days. The heroas parents, the heroes of the past, the first love, the princess childhood friend, the geniuses of the era, and the world will tremble.

Deek has never had success with the ladies. Heas poor, overweight, and generally unliked. Feeling like a burden on his mother, with his life going nowhere, he spends his days playing video games. However, when a mysterious game ends up in his bag, he is teleported to another world. The only way for a talentless slob like him to get by is to venture into dangerous dungeons for fame and money. Regrettably, Deek always preferred to play support roles, and in this case he picked White Mage. In a world with slavery, where he can purchase beautiful and powerful women as his allies, this might actually work.
Tags: Isekai, Slice-of-life, RPG, Weak-Protagonist, Comedy, Harem, Large-Harem, Slavery, Romance, Animalgirls, Monstergirls, Dungeons, Drama, Erotica, Growing-protagonist