A Hentai System in the World of Danmachi - Chapter 22 - 21 - 5th floor.

Every drop of this family bloodline is stained with sin. They are the embodiment of contradiction; calm yet maniacal, with great memories yet often forgetful. They pledge themselves to their dreams yet often compromise, are angels that are also devils… It’s why I hate them. And also love them.

The only hope of his family, a youth with the blood of elves and devils walks on a battleground of annihilation and rebirth. He wills his way through boiling lava and icy depths, killing on this field of despair to strike down the lofty figure in his sight. One day he’ll grasp his blade tightly and survey his surroundings, only to find no more enemies to kill.

The suicide of a high school girl following the rejection of her crush whom she confessed to roused the soul of a Scorpio Planet Marshal from her 200 million years of slumber — she reincarnated into the body of Xuan Mo. And so, she decided to live on Earth on behalf of the girl! However, it was quite the miserable situation for an alien to own two different sets of memories. She had to use her peculiar mental power to peep into the previous owner’s memories regarding everyday, mundane matters while trying to rein in her cutting aura pretending to be a normal human…

But her shocking performance during military training definitely must have floored everyone. Okay fine, her incredible finesse aside, what’s with the consecutive bullseye for every single round during their shooting competition? Was this something a normal female student is able to achieve? Shouldn’t you explain yourself a little damnit! And what’s with the multiple grade jumps, and being contended for by the various prestigious universities? What kinda havoc you try’na wreck with your low-key flaunting? I mean it’s a good thing she’s caught the eye of a special organisation and was entrusted with important tasks, but what’s with all aloof rule-breaking gameplay? She’s practically the walking definition of “hated by even the gods”.

What’s even stranger was that Xuan Mo’s only ever interested in warring matters and battling; she’ll only ever pay her ferociously blooming blossom luck as much heed as she minds the passing cloud with the mindset of crossing the bridge when she reaches it (wipes sweat) and can you be less insensitive when handling the various Earthlings’ endless crushing and eye-candying you?!

This all screeches to a halt however when she discovers the existence of someone else from her home-planet, so she’ll be needing a raincheck with the getting a “spouse” part of mortal life on the Blue Planet. Of course, we’re discussing this on the premise that she wanted to return home…

- Description from Novelupdates

Cut through the road of life and death with one knife, and Hanren slaughtered all those who had hearts!

…

I don’t want to be a knife, I want to be a knife bearer.

I don’t want to be a pawn, I want to be a chess player.

an ordinary person.

But he wants to live out himself in this world.

The unknown road ahead is slim, and the future is unknown; just walking step by step, before you know it, it is already a journey, and there is no world.

The thorny road, the red dust is far away; the clever move, the step is high;

Flatten the sea, turn over the rivers and lakes; clear the blue sky, hold the sword of heaven.

- Description from novelbuddy

Chen Rui, an otaku from earth, is reborn into a human body in another world, who falls into the legendary evil, brutal world of the devil called Mozu where humans are treated as food. He has to survive while facing horrors of the devil, violent dragons and a variety of power enemies depending on a strange super system chip and his wits. Surrounded by Devil’s beauties such as black-bellied lolita princess, cold queens, violent dragons, charming poisonous devils …

Wanting to live in the Devil’s world is hard! Wanting to live in the Devil’s world as a human is harder! Wanting a human to be the devil’s son-in-law is hardest!

Let us see how a small otaku uses power and strategy step by step starting from an ordinary human to writing a legend as the devil’s greatest son-in-law.

- Description from Novelupdates