Supervillain Idol System: My Sidekick Is A Yandere - Chapter 11 - : A Strange World Part 7

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?

I, Hyoudou Issei, am a 2nd Year High school student and my age is equal to the number of years I haven’t had a girlfriend. And, someone like me got a girlfriend! I’m sorry buddies, I will walk the path of becoming an adult before you guys! – That’s how it was supposed to be, but why did I get killed by my girlfriend!? I still haven’t done anything yet! Are there no Gods in this World!? And, the person who saved me is the most beautiful girl in my school, Rias Gremory-senpai. I learned the shocking truth from her who isn’t a God but a Devil. “You have reincarnated as a Devil! Work for me!” Lured by Senpai’s breasts and treats, my life as a reincarnated Devil began. So the “Academy×Love Comedy×Battle Fantasy” starts here with just aggressive and worldly desires!

Brave, wretched, kind, cunning, generous, greedy, elegant, vicious, happy, perverted, honest, prudish…

In this doomsday world, only by winning in the alien battlefield can resources be obtained to ensure the continuation of civilization.

Every soldier who enters the alien battlefield will randomly get a keyword of his own.

If the words and deeds match the key words, various attributes will grow rapidly and obtain superhuman abilities. On the contrary, if the human design collapses, it will quickly weaken;

This is a world of acting skills;

Acting is eating and drinking, acting is glory, acting is privilege, acting is life…

…

There are already completed Wanding works “Dream Master of Ten Thousand Worlds” and “Ten Thousand Ways to Eliminate Players”. The completion of this guarantee is guaranteed, please feel free to enter the pit.

- Description from novelbuddy

Dying and then meeting a giant God in the image of an Impostor from Among us in the afterlife was certainly something I didn't expect would happen.Getting reincarnated by it, was something I expected even less.And awakening in a world where heroes and villains run rampant, was certainly the cherry on top on this whole matter.But well, nothing I can do about it.