The Lycan king - Chapter 128

A teen is summoned to another world as the Hero. It turns out the Hero can power up women with his cum.

[Congratulations, The Universal Adaptation System has successfully synchronized]Hide was left flabbergasted when, out of nowhere he saw the system notification. It was his third and final Awakening process, there would be no more chance if he failed to awaken.But to his surprise, nor did he only Awaken a Unique Class with S rank potential, but also a System that let's him adapt to anything.Now paired with a Unique Class and the Universal Adaptation System, follow Hide as he goes on to complete his promise to Exterminate all Calamity Beasts from existence.#Overpowered #Revenge #Rythless #Antihero #Adapt #SSSAwakening #Gates #Dungeons

When Roland crossed Middle-earth with the Lord of the Rings system, Gandalf was organizing an expedition, the king under the mountain still did not return to his throne, the Hobbit’s adventure had not yet begun, and the world was still shrouded in shadows…

- 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?