Supreme Master In The Apocalypse - Chapter 11 The Hidden Sword

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?

A novel revolving around being transported to another world with an op system. The mc spends his day chasing skirts and doing missions to level up. A standard journey to the top with lots of girls from various animes and games with a twist of that gaming feel (hunting mobs, doing missions).

- Description from novelupdates

After being reborn in the ancient times before the Great God-Conferment War, Li Changshou becomes a minor cultivator. He is neither destined for great things nor great woe. His only dream is to live a long life as a cultivator. In order to survive in the cruel Primordial Times, Li Changshou tries hard not to accumulate any karma—killing inevitably leads to feuds.

Thus, he always plans thoroughly before doing anything and never allows himself to walk into dangerous situations. He hides his trump cards well, trains himself in escape techniques, refines poisonous pills, and masters his mystical abilities. Before making any moves, he takes on an extremely steady demeanor. Yet, every move of his ends up earth-shattering. Once he is done, he will disappear without a trace.

Li Changshou originally plans to remain hidden and safe in the mountain. There, he is supposed to cultivate until he ascends to immortality. However, everything changed one year when his master seems to think that their lives are too peaceful… He takes in a junior sister…

Lao Li’s family finally gave birth to a girl! It’s a pity that we are on the road to escape…

Mrs. Li: What should I do? My baby has lumps and no milk to drink!

Jiayin spat out bubbles of saliva and waved her little hands: “Don’t be afraid, I have space, bring your own rations!” then…

Li Laosi: Mom, I picked up a dairy goat on the roadside!

Li Laosi’s wife: Mom, this rabbit hit the tree by itself!

Li Laosan: Mom, I went to fetch water, and the big fish jumped into the bucket!

Li Laosan’s wife: Mom, a handful of rice actually makes a pot of rice!

Mrs. Li’s head was buzzing. With the blessing of her ancestors, she was giving birth to a little lucky girl, who would prosper her family once she was born! As a result, when I turned around, there was a pile of dates, apples and pears on the kang…

Mrs. Li: “Wait a minute! Fu Niu’er, let grandma slow down. We have good things, but we have to take them out slowly!”

Li Jiayin: Hehehe

- Description from novelbuddy