Which Genres Most Often Feature The Bahamut Demon As A Key Villain?

Demon | Stockholm Syndrome | Possessive | Lust | Obsession A demon with a human; unthinkable. A king with his slave… A perfect combination. Gabrielle's life changes forever when she and her friends accidentally summon a demon one fateful night. Taken as a slave to the demon realm, she finds herself at the mercy of the Demon King of Lust. But Gabrielle is not made to be a slave, to bow down. Adrian is accustomed to unquestioning obedience. His existence takes an unexpected turn when he encounters Gabrielle, an innocent human who defies his every command. Driven by an insatiable need to dominate her, Adrian becomes captivated by the challenge she presents. But she is just a human, just a slave. Their kinds are destined to despise each other—light and darkness, innocence and lust. As their worlds collide, Adrian's lust for control becomes something far more dangerous. Can he resist her, or will his desire transform into something much, much more dangerous?

~ Ducan : Demon king ~ My kingdom is on the verge of distraction and my race is about to perish in a blink of an eye. What I need is a blessed maiden who can only be found once per hundred years. A virgin girl with the favour of the gods, who will open her legs for me In order to restore the power slipping away from me. To balance my kindom and the reels of hell, I need her to carry my seed so I could secure my position and forever rule my kind. Once my eyes are set on her, she will become mine with or without her approval, affections or consent.

He died killing the Demon King. He woke up sixty years too early. Now the monster is a young man. And he is running out of reasons to stay away. --- Lysan Dusk was the hero who saved humanity. He killed the Demon King, ended the war, and delivered the world from suffering, and his reward was betrayal. He wakes up in a young student's body in a dormitory room of a magical academy, and the calender shows that the date sixty years before he was born. The world outside hasn't broken yet. The war hasn't happened. Lysan's plan is to keep it that way by staying completely out of it. Fail his combat exams, spend whatever borrowed time he has left, living a quiet life, where nothing requires him to be a hero. The man who will become the Demon King, the most feared monster in history is still young and beautiful, with pale grey eyes that find Lysan across every crowded room like he is the only person worth seeing. Lysan knows what those eyes will become. He has looked into them across battlefields, spent a lifetime seeing them in nightmares. He never expected it to feel like this up close. Roman is everything Lysan was warned about — magnetic, dangerous, impossible to ignore. Everyone except Lysan, refuses to be charmed, refuses to feel anything at all. But now, he is failing spectacularly at them because Roman keeps finding him. Keeps watching him and making Lysan's carefully rebuilt walls feel like paper. Lysan knows the ending. But for the first time in two lifetimes, he is wondering if the ending can change. If the monster can be loved instead of killed. If staying is braver than running.

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Miaka Von Speltsper, the myth, the legend and the daughter of two Gods. Miaka, the Demon King and the head of the Dark Council is the most powerful demon ever known to mankind, but she has a secret. She’s a hybrid. And the world she lives in has hunted down and eliminated every single hybrid in all the dimensions. But now…someone knows her secret, someone who has the power to destroy her. However, the world is changing and one of those changes is Kaleb Takeshi, the man with extraordinary eyes who has stolen Miaka’s heart with just one glance. But there is something about Kaleb that Miaka can sense but can’t describe. And not only is he human, he’s an enemy who has decided to give his loyalty to her. In this world of lies, deceit and betrayal; can Miaka trust her heart or will she have to choose century’s old traditions to stay alive? Because if she dies, it will truly be the end of the world.

A 25 years old boy named John is suddenly shot by his friend, which results in his death, but is reincarnated again as the new Demon King. Unfortunately, he agains dies in a battle. This time also he is reincarnated but as a human. Follow Vis' adventure as he gets revenge, becomes a demon and makes his own harem.