Throne of the Ghost Emperor (Danny Phantom X Naruto) - Chapter 57 - 5

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

There is always such a person in the world, his family background is better than yours, his status is higher than yours, while you work hard and think all the way up, but with just a wave of his hand, you are wiped out. What is even more sad is that he doesn’t even know who you are.

Zheng Jue met Han Jin like this but he didn’t realize this truth until he died. In the end, he had found the wrong opponent and ultimately lost his life.

- Description from Novelupdates

[ WARNING! MATURE CONTENT R+18 ]Synopsis:In the thousands of years of buried and recorded history, the mighty Godents—humans who arbitrarily gained extraordinary powers through a mysterious celestial body known as the Goddess—reigned supreme.After seemingly countless debates and wars of all kinds on how to maximize the utilization of the omnipotent comet that landed on Earth, the Summit Academy was thoroughly built.An academy with unique students whose words were infinitely more absolute than a mere third-world country's government...An academy where human depravity was constantly challenged and displayed against the nature of goodness...In this grand society that was founded for the sake of superficial peace and schemes in the shadows, a certain piece of information reached those in power.“The M-Rev File was lost.”A mysterious document allegedly containing critical information about the Goddess...Now presumed to be at the hands of an heir of one of the Seven World Corporations... and at the same time, a royal student in the very prestigious academy.Amidst the echoes of malice, one mercenary who appeared out of nowhere and with the questionable mission of protecting this female student was admitted.Student Name: Aeon ???Additional Information: ???However, all things considered, on Aeon's first day in this school that could decide a person's future in the blink of an eye, he received a peculiar text message—/ I miss you... /A/N: This R+18 story isn't something just to satisfy the reader's lustful nature...

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