Legends: The Emerald World - Chapter 22: Contract Closed

In the early world of immortal cultivation, there was no physical cultivation among immortal cultivators. And a top bodybuilder who came from the earth has opened up a new path here and became the ancestor of physical training.

- Description from novelbuddy

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?

An intelligence error caused the Third Fleet to face an ambush. In order to divert his enemies, the imperial admiral drove the starship alone into the meteorite band, and his spiritual power fell into a coma under heavy blows.
With the help of mystical powers, he began to experience reincarnation again and again to repair his spiritual power.
Therefore, after “death”, when he opened his eyes again, he became a blind and frail young master who’s parents both died and was about to be stripped of all his property by his uncle and aunt.

He Yan: ….first get rid of this group of bad relatives then talk (╯‵□′)╯︵┻━┻

Wait… This patriach, you’re clearly not part of the plot?

- Description from Novelupdates

Rael, once a teenager crippled by social anxiety, is reincarnated 1,553 years into the future after reading a book about Milford, the legendary God of Machima—a man who commanded armies of Steelborn, Machnoids, and Autonoms across the universe. Gifted with the Machima Bloodline and guided by Dominica, the World Domination System, Rael quickly rises to become the strongest World Conqueror.He first saw them on the book’s cover—steel women with lifelike faces, beasts with razor limbs, and looming above them all, a god in robes with a mechanical hand raised high. Coiled over him were a gigantic centipede and serpent of metal, guardians of his legend. Now, deep in a junkyard centuries later, Rael forges his own path. His first creation: an unbreakable fortress born in the dirt, a hulking Steelborn Tortoise with a mind sharper than any AI—crafted by Rael’s divine talent. From admiring Milford and wishing to be like him, Rael now marches forward to leave his own mark on the universe.Join him as he rises in rank across his world—and beyond.