My Master Only Breaks Through on the Edge of Death - Chapter 11 - : First Time Alchemy

“Hero, where are you going?”“To eat.”“Hero, where are you going?”“To the bathroom.”“Hero…!”“…”The woman who followed me everywhere… Ended up following me all the way to Earth.———A former hero who returned to Earth, now unemployed and just lazing around at home.Then, the saintess who came with him made a suggestion—“How about streaming?”“Hmm… This might actually be a good idea.”And so, the Hero & Saintess Healing Stream begins!

Reborn in the Marvel universe, Hawk learned one brutal truth—safety wasn't something you were given, you had to fight for it. He made himself a promise that day, committing to a path of relentless training and iron discipline that would define the next several years of his life.He didn't want a serum or a suit of armor, he wanted to unlock the power buried deep within.On the day his vow is fulfilled, he awakens a power that sings the song of creation itself, a force that can bend reality to his will.In that same moment, the sky over New York cracks open, and an alien armada pours through...

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

Gabriel was once destined to rise as a Paladin knight, bound to no one except the church, instead he became the subject of a forbidden ritual that shattered his body and soul. Changing him from a weapon of the church to an enemy.Exiled to the Northern Kingdom, a simple hunt in Eldenreach unravels everything. A mutilated corpse carved with holy sigils, monsters fleeing something more terrifying, and a conspiracy stretching back to his very origins.