MTL - Peerless Genius System - Chapter 784 Yucheng College

Wen Qinxi an IT guy at a prestigious gaming company lives a repetitive life, working on an innovative gaming system that is said to change the world. During a routine diagnostic check, he discovers a major flaw that could be detrimental but under pressure from the guys upstairs, the research and development hand over the revolutionary project despite Wen Qinxi citing flaws in the design. The CEO unaware of such a flaw enters the game as a test run before launching the product instigating a chain of events no one expected. manager: Wen Qinxii you have to go save CEO. You are our last hope Wen Qinxi: F*ck! l want a pay raise after this. Thus began the journey of saving the overbearing CEO

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

Arnold never thought his gaming skills would land him in a romance novel—as a doomed side character, no less. To survive, he hijacks the heroine's “system,” bending the story to his will. But when he dodges a deadly duel, he catches the eye of the heroine, Lara, his own step sister—and her love is a dangerous game. Arnold must outwit the plot and his step sister who's not afraid to kill for love. In this LitRPG romance gone wrong, survival isn't just about beating the system—it's about escaping the heart of a yandere.