Gekitotsu no Hexennacht - Volume 4, Chapter 3: It Flows

The little handsome son-in-law passed through a world as waste material and the husband of a wealthy family. But because of his lacking aptitude, the wealthy family had driven him out. So he worked hard and found a more powerful family’s thighs to hold onto. Soon enough, he became the strongest son-in-law and husband in history.

In this world, it was impossible to practice martial arts. It was futile so he might as well take advantage of his wife’s thighs and maintain a comfortable and leisure lifestyle.

He’ll train his wife to become the strongest and best person in the world.

“Whoever dares to provoke me, let my wife kill you!”

- Description from Novelupdates

16 years old-- most boys would be falling in love, as their hormones all rise to unprecedented levels. Most boys at Riley's age would have dreams; dreams that will slowly grow into passion. Riley, however, at age 16... killed the world's number 1 superhero.

In the world birthed by Pangu, the Three Sovereigns lit the spark of humanity that the Five Emperors would later fan into a blazing fire, eternally branding humanity as the leaders of the world….

This was a time where twilight had descended on the reign of the Human Sovereign and the Five Emperors had yet to emerge – humanity was merely one of the myriad races wandering about the vast cosmos.

This was a desolate and barren era. The monsters, devils, heavenly gods, and deities of all races stood aloft; with the demons, heavenly souls, and spirits dancing freely around the world.

The humans were still a feeble and burgeoning race, often taken as livestock and offered as sacrifices to the pantheon of races that ruled the world together from within the great wilderness.

This was not the era of the Foreworld, but the barbaric and untamed era of uncivilization!

Let us rewind back to China’s ancient and classical mythology and recount the legendary tale of how a single figure led humanity out of an epoch of darkness and into a new dawn.

Please sit back, relax and enjoy the (Rise of Humanity) !

Eira Kingston, a feared assassin, never imagined that death would lead her to transmigrate into the body of Ephyra Allen, the disgraced first daughter of the once-powerful Allen family. But what shocked her even more was the soft mechanical voice in her mind, addressing her as “master” and informing her that her soul had returned to its original body.Eira dismissed the strange voice, thinking she was having a post-death hallucination. But waking up in a hospital, with memories that weren’t hers flooding back, she was forced to confront the truth.Ephyra’s life had been nothing short of a nightmare. Despite being the legitimate daughter, she was labeled a bastard, shunned by all, and overshadowed by her scheming stepsister, who had stolen the love of her father and her betrothed. To make matters worse, the wealth and status the Allen family enjoyed were all thanks to Ephyra’s late mother, and the only reason she hadn’t been discarded entirely was due to her mother’s inheritance, locked away until she turned eighteen.But Eira wasn’t one to be defeated by circumstances. If she was going to live Ephyra’s life, she would do so on her own terms. She would destroy those who had caused Ephyra pain, claim the inheritance that was rightfully hers, and find out who was behind her own death. Because if there was one thing Eira knew how to do well, it was to survive—and make her enemies pay.However, being a high-schooler with nothing to her name wasn’t enough. As Ephyra, she’s powerless, but as an assassin, she’s lethal. Still, even that wasn't enough until she became the contracted wife of Lyle Aelion—a powerful, enigmatic figure in the business world with a secret illness. And it turns out, the only thing that can relieve him is her scent.