Martial King's Retired Life - Chapter 1Book 6:

In the 21st century Earth gave Birth to greatest genius ever. A genius who Master myriad of arts. Medicine to Engineering. Mathematics to Micro Biology. Weapon Designing to Environmental control. Music to Painting. Dance to Martial arts. He mastered Everything.

This is a world where humans, demons and mysterious beasts coexist.

Humans cultivate mysterious qi. Demons cultivate corporeal bodies. Mysterious beasts cultivate soul perception.

A legend says that in the middle of an endless rainforest, there are extremely powerful existences; they are called demon kings.

Some demon kings have a tyrannical corporeal body, some are experts in illusions.
Some demon kings are proficient in magic, some can even move mountains.
Some demon kings are able to sense things thousands of miles away.

These demon kings rarely appear in the human world. Even if they emerge in the human world, they would reincarnate in human form; assimilating with mankind while seeking to breakthrough realms…

- Description from Novelupdates

Beneath the peaceful façade of the modern world, an undercurrent of shocking crimes roils in the underbelly of society.

“Helena if I could be with you every moment of every day, fuck, I’d take that,” Romeo growled as he kissed her neck, sucking and licking along the way as well.“We’ve already lost nine years, Helena, I’m not wasting a moment more,” Romeo hissed as his lips crashed against Helena’s.She let out a moan as Romeo lifted her leg, wrapping it around his waist.“Feel that, love?” Romeo asked as he pushed his cock against her. “Feel what you do to me?”Nine years ago Helena Willow ran and on her first day back she meets an Alpha whom she connected with on a different level. An Alpha that could be her Mate.When she left her pack she left her family and the love of her life, her stepbrother Romeo Blackmoon.What happens when she discovers that the Alpha she's slept with was her stepbrother and that he could be her mate?