The Princess and The Queen Want me as their personal Slave? - Chapter 36: More Training With The Queen

The undisputed greatest doctor in Korea, Baek Gang Hyuk.

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?

“At thirty, a rare age in the past, and when the King of Hell doesn’t summon you, you go of your own accord.”After his divorce, Lu Liang suddenly felt as though the dirt was already up to his neck, especially when he could hear the sound of a running memorial lantern.Until he discovered that it was a message from the future, and that’s when his life took a dramatic turn.…Living in this world, we are all mere mortals.Being a mortal isn’t so bad—greedy, lustful, cunning, selfish…