Hell University - Chapter 3 - 2: Nail

Emily spent the last three years dying slowly in hospital beds, her brilliant silver tongue trapped in a body that didn't work. Her only escape? A spicy life sim called Queen of Hearts.One day, on New Year's, Emily dies as she gears up for another playthrough. But death, it turns out, is only temporary.She wakes up reborn inside Queen of Hearts, as her player character! Except this time, she isn’t clicking options on a screen. This time, she is Aegis Starcaller, a commoner nobody with silver hair, purple eyes, and a body that can finally move… and real, tangible ladies to seduce.Armed with copious amounts of meta-knowledge and a divine fertility blessing that makes every conquered love interest feed her magical power, Aegis sets her sights on Rosevale Academy, where she will build the life she never got to have on Earth.... And seduce everyone she can, while she's at it.---Yuri / Futanari harem story with a Futa MC! | Isekai Power Fantasy | Rags-To-Riches | Updates Daily!

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

Davies had just been transmigrated… but he wasn’t happy about it.After all, it was now his fifth life, fourth transmigration, the third time he’s been betrayed and murdered, his second…(oh well… no more lines)Davies: Hey! Where are my second and first times…Author: I already said I have no more lines, so shut up and let me finish the synopsis!…After realizing that he wasn’t destined to be a hero and after many run-ins with the “Fated Protagonists”, Davies totally abhors those crybabies that have their heavenly daddies spoon-feeding them with opportunities to be strong, especially at the expense of himself as he always ended up with the short end of the stick in all his lives.Davies is now in his fifth life, and now has a system that seems to target protagonists. Even though he doesn’t understand why he's been used as a steppingstone for the “fated ones” in all of his lives, or why he keeps on transmigrating, or even why the system is just finally showing up after all the transmigrations he’s been true…According to the system, he was on his last life but at least now with the system at his side to aid him against the protagonists, he can wreak havoc and have his revenge against the protagonists in this world and also find out who is messing with his life… is how the story should have gone, but…“What the hell is with this busted system…!!!???”

Qin Guanglin is a regular guy living a cautiously regular life. Apart from his freelance job as an artist and his hobby of gaming, nothing has ever been out of the ordinary for him.However, when he meets a mysterious gamer girl offline, he is immediately blown away by how perfect she seems to be for him.Is it all a coincidence, or is it fate? He realizes that there is so much more to life than just staying in his own comfort zone.This is a tale of lost and found...