Witch, I'm really not the Deep Sea Ancient God! - Chapter 65 - 53: The First Pet

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?

A serious accident caused the protagonist’s brain to have an unusual mutation. This changed the brain development that it opened the door to a mysterious universe. Not only he obtained a ‘god-like’ powerful telekinetic control and mental perception, he also had an abnormal analysis and memory capability comparable to super computer. Having such super brain, his rough life began.

Brain development progress 10%…….20%……50%….80%…. …100%

- Description from Novelupdates

Following an untimely death, Kin is reborn in a world completely different from our own. A world of Magic, Monsters, and fearsome Beasts.‘No way…’ Kin thought to himself upon noticing his skin color.He had been Reborn on the other side, on the Monster side, as a Goblin.‘Am I going to have to leave my life in this cave? Surrounded by other Goblins?’Thankfully, he wasn’t just any normal Goblin.[System initializing…][Congratulations!][You have been Blessed with an SSS-Rank Skill!][You have been Blessed with the SSS-Rank Skill “Palm of the Devourer”!][You have been Blessed with a Legendary-Grade Title!][You have been Blessed with the Legendary-Grade Title “Evolving Monster”!]With a palm that can devour, absorb, and assimilate dead creatures, the Rise of the Evolving Monster starts!‘The Goblins that left earlier are back. They captured a woman. Wait… Those ears… And a tail?’A life of blood-pumping adventure, unimaginable riches, unmatched strength, and heavenly beauties starts!

“I’ll clear your mother’s debt entirely. In return, you’ll marry me.”“Are you out of your mind? Do you really think I’d agree to such an absurd proposal?”“Possibly. But it’s a mutually beneficial arrangement. You keep your shop, and I get what I need.”“And what exactly is it that you need?”“That’s none of your concern. All you need to know is that this deal benefits both of us.”Two years ago, Lunara entered a marriage she never wanted. Desperate to save her mother’s flower shop, she was cornered by Eryx, a man with a hidden agenda. With no other choice, she agreed, and found herself bound to him in a transaction of convenience—he needed something from her, and she needed him to prevent her world from falling apart.But after the papers were signed, he disappeared without a word, leaving her with nothing but unanswered questions and lingering bitterness.Now, fate has thrown them together once more but with a cruel twist, Eryx doesn’t remember her at all.Lunara believes she’s long since moved on. But when she sees him again, a stranger who has no recollection of their past, old wounds resurface. What was the truth behind their marriage? And why, despite the resentment, does her heart still stir when he’s near?