MTL - The Kryptonian of a Certain American Comic - Chapter 377 171, Sai's authority

Zack “Kazz” Foreman once was a human from the earth when humans went through a dramatic change because of an event. This forced them to evolve into energy-based beings but was sucked into another dimension.

Forced to start living out lives on random worlds in a fractured dimension, Humanity is placed on the path of complete extinction.

This is controlled by a demon king at a place called The Center of Everything.

The Demons try to force Humanity's mark from every reality, so there are only demons, but the Demon King feeds from anger and pain. A constant tournament going at the center of everything to feed his hunger.

Kazz made it to that point once, but was tricked, refused entry to the tournament because he had offed a place one of the gods of the worlds.

Refusing to give up, Kazz goes back to the beginning to start again. To do this, Kazz must give up all of his memories to choke the flow of demons born fully grown from a pool of recycled souls.

This journey starts after he lives a solitary life trying to get stronger but not knowing why. The world Kazz is on is like our earth, but it was only a mimic of the earth we know.

Caught using steroids and about to give up and join the army, Kazz stumbles onto a cave in the ground. He is transported to a world filled with demons and monsters, and a human god named Hero is speaking in his head.

Hero, a person Kazz knew but was not friends with, followed him to help but was lost from him. Upon meeting Kazz, Hero offers him the Hero System to help him advance in this new world.

Kazz refuses after trying to get to the top and failing to use the easy route. This starts a series of frustrating events for both Heroes, but they learn to work as a team over time.

Kazz will meet misbegotten monster girls and demons that he agrees to take care of in this world, using the Ranching System. It only gives bonuses to the girls and skills to help raise them, but he will also learn to control the Elements with Shamanic abilities.

Kain, a young teenager, accidentally lost in a Dungeon and awakened a special system. A system that allows him to continuously return to level 0, using his level to add and increase his skill points. From there, Kain began his journey to find the truth of this world, and when he took off that mask, what he saw was...

On their wedding night, she gnashed her teeth, yelling, “Your Highness, that’s shameless!”

Set off by the flickering light of red candles, he curved the corner of his mouth into a wicked grin, “Actually, I can be more shameless…”

…

When they met for the first time, he was the young prince who lived in his day of brilliance, while she was the pampered princess of the adjacent state.

When they met again, he became the crippled underdog suffering from frustration, while she became the lackluster hostage stranded in an alien land.

In his mid-life, he was defeated in the fight and had his legs broken; his wife passed away and he didn’t have anything left except his father’s detestation… After constant blows took the edge off his spirit, all he wanted was nothing but serenity.

In her teen-age, her state perished and her home lost; she lapsed into an awkward situation after being abandoned and having her marriage annulled… As endless hardships isolated her from happiness, everything she wished for was no more than peace.

…

“Lu Zhishan, when I first met you, I didn’t think I’d marry you…too old,” after years passed by, one day, she lay on his laps mumbling, with a kind of hazy beauty on her boozy face, “and lame.”

“Mu Nanzhi, you have the wrong memory. At our first meeting, I’m neither old nor limp.”

“…When was that?”

“When people were celebrating your first birthday,” that man assumed all gentleness and joy crept on his eyes and brows, “On that day, you were ‘drawing lots’ in the rear hall. I also sneaked there to have a look. But, out of my expectation, you directly grabbed my true-love knot.”

…

How vivid the red love pea is embedded in the exquisitely carved dice,

Just as my feelings for you deep in my bones.

- Description from Novelupdates

Rimu Dynasty, Kingdom of chaos. Demons were rampant, and it was difficult for people to live.

Gu Qing’an had not yet had the opportunity to appreciate his beauty upon transmigrating in this world, as he had to face the demon who targeted and devoured humans.

Fortunately, she had a system.

“I, Gu Qingan, have never been weaker than others. System, add it to me.”

……

Many years later, Gu Qing’an, standing on the frozen void, looked at the newly discovered strange world under her feet without any expression.

“Compared to human beings, alien existence is a demon,” she thought to herself.

“Then, are all creatures in this entire world considered demons?”

- Description from Novelupdates