NTR: Milf Fantasy Isekai - Chapter 51: Ch : MILF Elf

In a certain world, there was someone who excelled in magic combat, people called him 『Sage』. Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence. And the conclusion he arrived at was very cruel, 『My body is not fit for magic combat』. Yet he didn’t give up. He sealed his own soul with a magic art, and was reborn in a far-off future. And the magic theory in the completely changed world he saw there was of unbelievably low level.

Every villain is scripted to die. Kael Voss was the hero who always won—until death flipped the board.He wakes in the body of the first boss he ever killed: a shadow lord doomed to fall in chapter one, forgotten fodder for the chosen one.No more playing nice.With perfect game knowledge and the forbidden Shadow Sovereign System, Kael turns the script inside out. The “hero” who slaughtered him? Now prey. The gods who wrote his fate? Blind to the rewrite.He schemes from the dark, grows stronger in silence, and carves his own ending.The light thinks it’s destined to win.Kael knows better.One shadow against the entire story.This time, the villain finishes what he started.(Drop a power stone if you want the villain to win big!)

In novels with a stud there is always a Senior Martial Brother like this:

In the early stages of the novel, his innate talent is high, his cultivation is good, his appearance is handsome, and he has an intelligent, cute younger Martial Sister as a fiancée.

In the middle stages of the novel, he is caught unprepared and defeated by a young disciple (the protagonist) in the sect who’s hardly remarkable at all. From then on, he falls from his godly altar and loses his brilliance. Even his young Martial Sister leaves him for someone else.

In the late stages of the novel, he continues to turn dark, going down the Demonic Path and becoming the major villainous boss. However, the protagonist still ruthlessly defeats him and his soul is eternally sealed.

Once Qin Mo opened his eyes, he discovered that he had become this Senior Martial Brother.

- Description from Novelupdates

To save someone, a poor boy unexpectedly acquired Dragon Blood as a body fortifier and even slept with a beautiful female CEO. By a twist of fate, he became the bodyguard of this female CEO, thus beginning a journey of an incredible turnaround.Female CEO, “Come to my room tonight to discuss work.”Long Fei, “Are you trying to kill me? Discussing work every single day for a month, can't you give me a break?”