This is a Beta Test?! - A Literally Broken System - Chapter 87 17.4 Duel?

Shaymon, the man who has achieved the apex of dark magic, is framed as being a Demon King and is killed.

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

There is an ugly beast that violates women in prison.

A treacherous beast that is feared and called a “Butcher”.

That’s me.

I was once a human but now I can’t even remember my own name.

I can’t speak, and I don’t understand a word they say.

It is in this deep loneliness that I am pouring my essence into the women everyday.

I pour my burning rage into them.

Over and over again, until they conceive.

From morning till night. Until the women’s souls withered.

To show them that I’m an excellent stallion and an obedient domestic animal.

But my soul has not perished yet.

I will break free from this prison soon. And when I do, it will be your last.

Every human who betrayed me, every demon who altered me, I will trample down like an ant.

And it won’t stop until I’m satisfied.

The dawn of the beast is near.

Awesome, I'm gonna catch a nap after lunch, and bam! Kidnapped.Of course, the damn floating screen in front of me tells me it's a once-in-a-lifetime 'job' opportunity as a streamer for all realities, living epic adventures, and whatnot.Well... except for the part where I couldn't refuse and kinda ended up in a damn forest with just the clothes on my back, I have no freakin' clue where I am, besides the fact that I'm no longer on my damn beloved planet, and apparently, there'll be a frickin' endless number of people watching me do everything?“I think I'm gonna have a freakin' aneurysm...”[...]It's my first time writing here, I've been wanting to write for a while now, so well, here we go. English is my third language, so there might be some mistakes or incorrect forms of writing, I apologize for that, if you notice any, please let me know, and I'll try to fix them.