Strongest Survival by Otome Game’s Heroine (LN) - Vol 1 Chapter 33: A Combat Maid’s Afternoon

In his first life, Victor was lazy, poor, and the ultimate gambler, but the Goddess of Envy gave him a chance.

[ Die and go back four years into the past to restart your life. ]

Victor lost all hope and killed himself, and so began his second and also the most miserable life.

He became rich and successful but soon his girlfriend betrayed him and took away all his fortune, having decided on a desperate act Victor came up with a plan to avenge himself.

Although his plan was successfully executed, Victor hoped that this time he would die once for all and forget the despair that followed him through his two lifetimes.

Yet as if to deny him of his salvation, he suddenly heard a feminine voice once again, but a different one this time.

[ Goddess of Lust, surprised by your actions, grants you a gift ]

[ Yandere system activated! ]

It was a turning point for Victor.

From now on whether it is a Goddess, a Vampire or a Succubus, no matter who it is I must seduce you or I will surely die this time!

Rumor had it that Qiao Xi had a weak constitution—a sickly beauty. Rumor had it that she spent a fortune every day on medications—eating them like candy. Rumor had it that ten servants waited on her by her bed every day—a burden to everyone. They were all waiting for the Qiao family to toss Qiao Xi back to the countryside and leave her to fend for herself.Qiao Xi: "They're all saying that I'm weak and can't take care of myself. Apparently, I spend money recklessly as well.”She looked down at her tattered shirt and was exasperated.Qiao Xi: “Are you saying that this wealthy family lets their daughter wear tattered clothes every day?”The Qiao family's rich daughter? She had enough! She would not be it anymore! Therefore…Scumbag guy: "Without the Qiao family, you're nothing."Qiao Xi: "If I'm kicked out of the Qiao family, I'll be done for."Scumbag girl: "Sis, don't be too disappointed. As long as you work hard, you'll be praised one day.”Qiao Xi: "Shut up, I don't know a traitor like you."The scumbag guy and girl: "???"Rumor had it that the Gu family's youngest son, Gu Zheng, rashly married a woman who had nothing but looks.Qiao Xi: "Is someone looking down on me?"One day, Qiao Xi saw one of Gu Zheng's employees racking his brains over a series of numbers on the computer screen. Since she was free, she lent a hand.Did she just crack the firewall created by the joint efforts of top elite hackers?!Gu Zheng inched closer with every step. "Qiao Xi, what else are you hiding from me? Hmm?"Qiao Xi: "Oh, no! I feel dizzy again! I'm so weak. This body of mine is just too weak!"

Scott McCall's life changes the moment he is bitten by a werewolf, but this isn't the same Scott from before. A transmigrator from another world, the new Scott embraces the power and knowledge of his wolf side, determined to control his fate. With a confident, decisive, and fearless personality, Scott aims to protect his loved ones, especially Allison, while becoming stronger than ever. As new supernatural creatures and threats arise, Scott must master his alpha potential and unravel mysteries not found in the original timeline. Armed with knowledge of the future and powers beyond the original Scott, he carves his own destiny, challenging both hunters and creatures alike.Disclaimer – I do not own Teen Wolf.

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