Avoid Yandere Constellation - Chapter 180:

At eighteen, her mother died in a car accident, leaving her all alone in the world. One day, her kindness in rescuing someone led to a life-changing transformation.She was provided with food and accommodation, and someone even arranged for “360-degree personal protection” for her!Just when she thought she had picked up a pie from the sky, she was tied up and sent to a training camp, embarking on a tough yet passionate new journey.Bully her? With Taekwondo, she'll beat you until you can't tell north from south!Compete with her in sniping? Rookies, step aside, she's challenging the strongest sniper!Doubt her hacking skills? Come on, sister will show you what playing with computers is all about!She stood out in the camp with high profile, top in every category, who would dare compete against her?Back home, the little overlord turned into a docile rabbit, utterly bewitching someone!Unable to endure it any longer, he dragged the little overlord to the civil affairs office and registered their marriage.At night, he returned home, and righteously set about 'educating' her!

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

[ Fusion Successful ][ Water Toad + Sky Dragonfly + Nightmare Moth + Bluefang Hyena= Nightmare Hydra ]----Yuki Igarashi, once a terminally ill boy confined to a hospital bed, dies with a silent wish for strength and freedom.That wish is mysteriously granted when he reincarnates into a fantastical new world. Not as a human, but as a newborn Frost Dragon.With his memories intact and curiosity alive, he is soon greeted by a mysterious system called the Dragon God System, which mistakenly binds itself to him, claiming he is not its original host. Still, it is now eternally bound to him.Despite his infant form and weak body, Yuki discovers he can extract bloodlines and skills from other creatures using the Dragon God Codex, and fuse them within a mysterious space called the Fusion Lab.Even more shocking, a glitch in the system allows him to repeatedly Fuse bloodlines without depleting them, opening the door to limitless growth.

[Rebirth + Era + Space + Getting Rich + Counterattack Face-Slapping]Waking up, Su Yuanyuan found herself in a time of famine. Looking at the bird-poor environment, she felt like she could die again to escape back.But why does this thought give her a splitting headache?Want to hang herself, but the safety rope brought from her space would break on its own?Thinking of jumping into the river, and she gets pulled out just after jumping in?Alright, better to live stubbornly than to die well. She has a space, can farm, and doesn't fret over food or clothing. Heaven, the 'father', offers conveniences, making life pleasantly good!However, that handsome guy who always forces her to work, I'm only ten years old, is it really okay for you to look at me with such deep affection?