Save a Failed Idol's Life - Chapter 167:

Thanks to the so—called God, I somehow ended up as Uchiha Itachi’s younger brother and Sasuke’s twin.Wild, right?If I had to sum it up, I’d say, “Losing Shonen Jump is one thing, but losing your integrity? Now that’s a tragedy.”But let’s be real—none of that matters when you’ve got the Gojo System from the get-go. Yeah, you heard that right. From the moment I landed in this world, I was set to flex on the entire ninja world.And just like that, Konoha got itself a brand-new, utterly bizarre Uchiha.

Everyone must have a few regrets in their lives, and for Mykel regret was publishing this novel on the internet. Because of this failed novel he wrote, made his career down the hill as an author. Thanks to this novel, he lost his passion and he lost everything that he had.

"I wish I can destroy this novel so that nobody will be able to see it or remember it anymore," Mykel said.

That was what he wished for, and for some reason, he went inside that novel of his and as himself in the story that didn't suppose to exist?

Mykel smirked and grinned as he looked at the system.

[You are the creator of this world, you will have the access to the command system. You are free to do anything as long as it is listed in the command system]
[Please enjoy and have fun]

"Heh, then I will turn this world upside down," Mykel said as he glared at the notification in front of him.

Lan Xuan smiled gently as she said, “My dear sister, who told you to obstruct my path? Your man belongs to me, your dowry belongs to me, your everything, belongs to me.”

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