What Is The Origin Story Of The Demon From Black Clover?

The day Ruben Luisetti (Overlord Vampire of New York City and heir apparent to the Vampire King throne) first saw the feisty, golden haired beauty with the large luminous emerald green eyes, he had a ‘feeling’ He was shocked, he hadn't had one of those for many years and this one was strong attraction. He became intrigued, when during his investigations into some underworld murders, he kept bumping into her. This 'feeling' should have worn off, it didn't. In fact it just got even stronger, as a deep desire to possess this creature crept up on him. When he saw that she was clearly being enslaved and controlled, he felt obliged to save her and free her from her bonds. And able to be with him! But what is she? He thought she was perhaps Fae…boy, was he wrong and shocked to discover she was a Demon! . Katarina is a soldier demon, owned by Demon Lord Basille. Lent out to the human Scott McGowen as part of a blood pact contract to make him more powerful and rich while at the same time collect the souls of two hundred mortals for her Master to bolster his ranks in the Demon Realm. Until Ruben Luisetti steps into her life and shows her that what she thinks is her 'normal' in life, doesn't have to be… Well used to being merely a tool Katarina finds herself strangely entranced by the delectably handsome and powerful Vampire Lord and finds herself enthralled by Ruben's dominant, possessive yet gentle and caring nature for her, showing her a new way of being treated by someone…being treated with respect, care and…. Love?? . Can Ruben free his beloved from the Demon Contract? Can he free his beloved from Demon Lord Basille? To become entwined by Fate?

A devil child who was raised by a devil hunter like a human child. Under the auspices of the devil hunter He finds love, affection, shelter, and knowledge without knowing his true self.

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.

Arianna had not planned on using magic to summon anything, she just wanted to get out of an arranged marriage. She was told of the ancient magic of summoning a guardian but instead she had summoned a demon—the demon king himself. But what would he ask in return for his loyalty to this princess?

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.

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.