Abyssal Chronicles - Chapter 20 - 21:

“When I opened my eyes, I found myself as a character in a game. It was bewildering, but I thought it was worth a try. That was until I saw the skill given to me. It was [Opening Eyes], with no abilities whatsoever.”The story starts with the MC playing a game that is “Very Difficult”, so difficult, in fact, that no one has ever managed to kill the last boss. After 18 years of playing and, having the best attempt be at 30% of the last boss’s HP, he decides to try out a character that he never used.This character was the Slit-Eyed character. It had garbage stats and garbage traits. But, since the MC had ran out of options with every other character, he was trying to see if he could find any secrets with this new character. So he puts in his name ‘Zero’ and presses play… Only to find himself inside the game, as the Slit-Eyed character.

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?

The protagonist, Winnie (文尼), confesses his love to his childhood friend—the princess he’s been secretly in love with for years—but is brutally rejected in public. His heart shatters, he’s humiliated and ridiculed, and he collapses unconscious. When he wakes up, he vaguely remembers his past life’s memories and realizes he has transmigrated into the world of an otome game he played before. At first, he’s thrilled, thinking, “Nice! I must have been reincarnated as a villainous side character who disrupts the protagonist’s romance, right?” But then… surprise! He’s not just the villain—he’s the “Saintess”!

Yuan Xi had been the secretary for Gu Hanchen for five years, working tirelessly without a single day off. Not only was she overworked like a horse, but she was also slandered by Gu Hanchen's fiancee and her friend, Miss Chu, who accused Secretary Yuan of delusionally hoping to turn from a sparrow into a phoenix and become the wife of President Gu. No longer able to tolerate the treatment, Yuan Xi handed in her resignation letter. After resigning, the once overburdened secretary surprisingly turned out to be the legitimate heiress of the wealthiest family in Jiangcheng, the Chu family! Back at the Chu household, Yuan Xi discovered that the family had taken in an adopted daughter, Chu Yan, who had been standing in for her. The false heiress was bright and unrestrained, rightfully considered the unrivaled young mistress of Jiangcheng. Even after the return of the true heiress, Chu Yan remained the celebrated young mistress while Yuan Xi was invariably seen as a mere shadow when compared to Chu Yan's splendid life. Yuan Xi's husband did not even own a house in the center of Jiangcheng. In contrast, the impostor Chu Yan was set to marry into one of Jiangcheng's top four wealthy families, the Bo family. Everyone in Jiangcheng ridiculed Yuan Xi for not having a life as fortunate as the false heiress, nor a discerning eye. That was until the day when Mi Chen was listed on the stock market, and Yuan Xi swiftly rose above her own father to become the new wealthiest person in Jiangcheng. On the day Yuan Xi's child was born, the established noble Huo family from A City announced with great fanfare the joy of welcoming a new grandson... Yuan Xi had always thought that her marriage to Huo Shiyen was merely a shotgun wedding, and that Huo Shiyen had someone else he considered his childhood sweetheart and sweetheart under the moonlight. Only later did she realize that she was, in fact, his cherished childhood love.