My mates in Beastworld - Chapter 230 Sneaking around 18+

In a future timeline, the earth was visited by a species known as the Slarkovs.
Having lost their home planet and in search of a new one, earth was the next habitable planet for them.

Humans and Slarkovs made a deal with each other in return for the Slarkovs living on earth.
The Slarkovs traded their technology and knowledge for a new home.
They were similar to humans except for some of them who had slight differences so fitting into the society wasn't a problem.
Over the years Slarkovs and humans began to mate with one another and reproduce offsprings.
This in turn created a new species known as the mixed-blood.
Centuries later mixedbloods could tap into their bloodline and perform unimaginable feats.

Gustav born into an age where bloodline determines everything, struggles to fit with a useless bloodline.
His bloodline only grants him the ability to change his hair color, destroying his hopes and dreams for a great future.
His fate is turned around when an unexpected situation leads to him finding a system that grants him the power to unlock and upgrade bloodlines by completing quests but he's baffled by two quests with a five-year deadline. Success will grant him unimaginable rewards...
But only one thing awaits him if he fails... Death!

Follow Gustav on his interesting journey filled with unprecedented adventures, danger and death, maybe?

The world is made up of the five elements, and it could be divided into Yin and Yang.

Beneath the heavens, on the ancient divine center continent, billions of lives thrive in the prosperous era of the cultivation.

Across its vast lands, happiness, sadness, reunion, and separation played out in the long lives of those seeking immortalhood.

Light is always accompanied by darkness, and under the radiance of the heavens, there are silent shadows moving about…

- Description from Novelupdates

(Marriage first, love later, short-lived parents, 1v1 double cleanliness)

Du Jingyi braved his fate and married into the Duke’s mansion, becoming the daughter-in-law of a wealthy family.

The husband is Shang Shaoyu, the most popular god of war in the Daxing Dynasty at that time, but it is widely said that he is known as a wife-suppressant.

I thought it was a match made in heaven.

Unexpectedly, on the night of the wedding, Shang Shaoyu only had time to lift his hijab, leaving a sentence of “Cezhou is in danger” and left in a hurry for three years.

After the master returned to court, he remembered that he had a lovely wife in his house.

I thought she had been wronged, but I found that my beloved wife hiding in Xitang Courtyard was living a better life than anyone else.

Everyone in the Duke’s mansion was going through so much trouble, but she was the only one who was pampered…

Du Jingyi just wanted a stable retirement, but he was forced to kill everyone in the back house.

First, half of the bed was given away, and then someone squeezed into my heart for no reason.

Just before her fall.

The general, who had a hard face and a cold heart, had a gentle and charming smile.

He whispered in her ear: Madam, please have mercy…

- Description from novelbuddy