MTL - The Holy Lord In the Comic World - Chapter 4 : Jakumar

Rogers Darren is a smoker, drinker, liar, lothario, gold-digger, rule-breaker.At a brutal Marine HQ hearing, Darren faces accusations of scandalous wages, stolen Germa tech, suspicious Celestial Dragon deaths, and a few too many questionable entanglements with nobles-just another day for the greatest disgrace in Marine history.Biting his cigar, Darren simply grins: “I smoke, I drink, I lust for money and women, I crave power, I lie, and I break every rule... but I'm a damn good Marine.”Silence fell like a dropped anchor.(￣□￣；) (ーー゛) (￣o￣)

There are a total of seven sins, and a revelation is made to a young man named Alex that he is destined to become a demon lord, more especially a demon lord of sin called LUST.

It's not like he can change that and because he always knew something about himself was different—not in a physical sense, well, maybe a little—and not in a mental sense—but rather because he is thrown into a demonic war that compels him to accept his new reality.

He was only aware of a difference in himself. Relating to him and the ladies who are drawn to him... Well, it was more or less like he was a magnet in front of all the girls, and all the girls were drawn to him like a metal.

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

Five years ago, after a car accident, Ye Fan fell from a demonic prodigy to an “idiot”!Five years later, on the same day, his seven older brothers and three uncles all perished on the battlefield, a family of ten loyal martyrs!At the funeral, Ye Fan's fiancée called off their engagement. The stunning sister-in-law declared on the spot, “If you didn't want to marry him, I will! I am willing to carry on the Ye Family line...”Ye Fan felt uneasy, “Sister-in-law, please don't. I'm really not an idiot anymore!”