Extra's Harem: Invincibility Starts with Marriage and lots of Children - Chapter 39 - Reason for Everything (A Promise?)

A world-famous hacker and daughter of the most powerful criminal family who ruled the international underworld for many generations is killed when their organization is annihilated in a single night.

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?

After the soldiers’ mercenary group where he used to work had been utterly destroyed, Loren, who survived the disaster, decided to walk the adventurer’s path as a way to make a living. However, for Loren who had no acquaintances and nothing but an empty pocket on him, receiving a single quest seemed like a faraway aim. So, as he was contemplating about what he should do next, another adventurer called out to him.

kingdom-building video game. Now the lord of a struggling FF-rank village, Rowan is tasked with an impossible mission: to transform his village into an unrivaled SSS-rank territory.Fortunately, Rowan wasn't left alone as his rewards reflected before his eyes.-SS-rank 100x Reward-SS-rank Copy-SS-rank Merge-SS-rank..-....Armed with these powerful skill, Rowan set out to build the greatest territory and become the unrivalled lord!