Adorable Twins: My Mother Is a Cool Miracle Doctor! - Chapter 84 - : The Man with the Black Card

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

Lieutenant Jack Fritz is a self centered American man of German descent. He like many joined the United States Navy in hopes of getting an easy life and easy money. In fact getting money and taking it easy is all he has ever really wished for in life.However life seems to have other plans in-store for Jack as he suddenly finds himself at the beginning of World War 3. Though his fight does not last for long as he is suddenly blown to bits by a missile and sent into the afterlife, but instead of going to heaven Jack is dragged to another place where he is given another chance at life by some fiery demon for a price.Having been given no other chance Jack does as the demon says and earns himself life again. Though he doesn't return to his original world, but a medieval one. With no guidance and no higher purpose given to him he simply decides to do the best that he can within this new world of his. This time he will for sure earn that perfect life of his and possibly a lot more.But little does Jack know his fate is not his own and there are many sinister things in-store for him. Also the world he finds himself in is not a safe or simple medieval world, but one beset by dangers from all sides that are already little by little driving humanity towards its extinction.

A low-level civil servant. An F-class hunter. Yoon Seora thought that’s how she would live for the rest of her life.Until one day she was thrown into a dungeon alone.“System, you f*cking son of a b*tch!”The moment death was right around the corner, everything was turned upside down by her cry that burst out unconsciously.[Checking information about ‘Yoon Seora’, the awakened who uttered abusive language at the system administrator] [Do you wish to sign a contract with the system administrator?]​So I happily signed a contract with the little system administrator who had appeared out of nowhere…【The overall evaluation value is readjusted.】【The Awakened ‘Yoon Seora’ (S-class)】​Wait a minute, Administrator-nim.You didn’t mention I would jump from F to S-class.【Administrator: (´ ε ` ʃƪ)♡】【Administrator: ♡ (ʃƪ ˘ ³˘)】【Administrator: (ง・▽・)ว】In addition, this administrator who overuses emoticons is too unreliable.Whatever. By being an S-class I was going to quit being a dirty civil servant who always works overtime.“I’ve never seen you in the past. Who are you?”“Hi, I’m a contractor for the world administrator.”​“I have never seen you before. Who are you?”“Hello? I am the world administrator’s contractor.”Somehow, I ended up in the center of an incident where the world is filled left and right with returnees. Can I really quit?Resignation Difficulty SSS+. Stay alive, office worker!

At six, Jiang Huai stubbornly clung to the thighs of the fairy in white and wouldn’t let go. She took him back to the mountain and made him her only direct disciple.At fifteen, he changed his way of addressing his master from ‘mother’ to ‘sister,’ and after being severely beaten, he corrected himself to ‘Master’. Jiang Huai harbored a grudge in his heart for a full six years.At twenty-one, he learned how to talk back to his master.