Shikkaku Mon no Saikyou Kenja~ Sekai Saikyou no Kenja ga Sarani Tsuyoku Naru Tameni Tenseishimashita~ - Chapter 15, Strongest Sage, in the Middle of a Journey

Revenge is a dish best served cold, with dollop of whipped suffering and a sauce of acute humiliation.Karma would do anything to exact revenge on the one who was responsible for her mother's death, her father's disdain and distrust, and a miserable life.She was manipulated, maltreated, and humiliated by the one she trusted the most. Her stepsister!!Discovering she had only three days left to live, Karma would go to any length to exact revenge. Even offering herself to the scary and powerful demon overlord.A contract. Blood oath. Manipulation. Betrayal. And lots and lots of revenge.

Ye Fan accidentally obtained a billion crystal technology system, and since then, he has become out of control.

Android: You do n’t even have a mobile phone system. I want to make it impossible for you all!
Ye Fan: Sorry, I researched it out, it seems to be more powerful than yours!
BMW Benz: Our engines are famous all over the world!
Ye Fan: Sorry, I do n’t have an engine, I only have magnetic levitation, and the speed is only a few times that of yours. Do n’t worry, take your time!
…
Enemy: Is he still human?
Who can stop this!

- Description from Qidian

The hero who was killed by the demon king ended up reincarnated as the son of the one who killed him! Thus began the life of the hero who donned in the mask of the ideal demon prince to topple his own kingdom while doing his best to prevent anyone from discovering his identity―― But to do that and blend into the demon tribe society, he had to kill his former comrades. Nevertheless, to become stronger, to save humanity, he had to walk through all kinds of paths of carnage! This is the tale of the demon race’s fake prince destroying his own kingdom.

O Hero, Trample Those Who You Should Protect!

TN: Most part of the other character in the novel is depicted from a non-human perspective so expect something that is completely different from the common sense of human.

After crossing into the story, he finds himself owning billions in assets, starting off with a stunningly alluring wife and seven exceptionally beautiful daughters.However, Xu Hao is in a panic.His identity is that of the villainous antagonist in the book, doomed to be killed by the rebellious protagonist, who will seize his wife and daughters.Fortunately, there are still two and a half years before the plot begins, giving Xu Hao time to plan ahead.Wait—he’s also activated the Emotion Harvesting System?School belles, CEOs, police beauties, mature women, lolis, queens, sisters…When the plot finally unfolds—The protagonist, a war god, returns to find his mother and sister already embracing Xu Hao.The divine doctor protagonist descends from the mountains, only to see his fiancée heavily pregnant.The reborn protagonist meets his first love and childhood sweetheart, each holding a baby in their arms.…This novel and its characters are purely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.