System Bestows me with Immortality, Living on to Eventually Become Invincible - Chapter 4 – A gentleman’s revenge is never too late even after twenty years

Xiao Yanling traveled through time.

Yan Suisui, the cannon fodder and silly sister who transformed into the heroine of the Koi novel.

She is from the same mother, but her younger sister has stolen her luck, and she is the little lucky star favored by the group in the capital.

And she became a disaster star.

She was sent to the countryside and lived a life of stupidity. The whole village was slaughtered and her life was miserable.

The three brothers in the adoptive father’s family died without a burial place.

Twins are born from the same birth, but they have different fates.

Yan Suisui put her hands on her hips, and her words came true, and her words followed the rules, pointing out who was struck by lightning.

She wants to change everyone’s destiny! Take back your luck!

On the day she was brought back to the capital, the whole capital was eagerly waiting to see her joke.

But who would have known that the poor eldest brother was the youngest chief minister in the dynasty.

The second elder brother is already a general guarding the dynasty.

The third brother controls the world’s granary!

The aloof tyrant was standing cautiously at the city gate, waiting for his little ancestor to come home.

- Description from novelbuddy

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

This novel is also known as Only I Level Up

10 years ago, after “the Gate” that connected the real world with the monster world opened, some of the ordinary, everyday people received the power to hunt monsters within the Gate. They are known as “Hunters”.

However, not all Hunters are powerful. My name is Sung Jin-Woo, an E-rank Hunter. I’m someone who has to risk his life in the lowliest of catacombs, the “World’s Weakest”.

Having no skills whatsoever to display, I barely earned the required money by fighting in low-leveled catacombs… at least until I found a hidden catacomb with the hardest difficulty within the D-rank catacombs!

In the end, as I was accepting death, I suddenly received a strange power, a quest log that only I could see, a secret to leveling up that only I know about! If I trained in accordance with my quests and hunted monsters, my level would rise.

Changing from the weakest Hunter to the strongest S-rank Hunter!

- Description from Novelupdates

Enemies to lovers? ✔️Villainous and possessive ML?✔️Fiery spirited FL?✔️Dark Romance?✔️Excerpt:“Wife?” Lady Karina repeated, almost shouting as if she'd misheard him.“I would not marry you even if you were the last man in this world,” she remarked with sweet venom, a poison Van Merikh would gladly drink. “You are a murderer and a thief. I do not want you!”“But I want you,” Van Merikh stated firmly, his dual-coloured gaze leaving no room for argument. “And that is where this conversation shall end, Lady.”Van Merikh threw open the door and practically dragged her to the base of the stairs that led to the upper floors. When she refused to mount the steps, he easily lifted her onto the first step and spanked her soundly on the bottom.“Go to your chambers,” he ordered softly.“This is not over,” Lady Karina growled. “I will fight you with the last breath in my body against this…this madness.”“Go, or you shall feel my hand on your backside again.”**************Magic as the world of Ethuaria knew it came from the distinct markings specific to each bloodline and nation that a person may or may have not been born with.It would appear at birth on different parts of the child's body, bringing about unique abilities passed down in their bloodline from mother to child.And for eighteen-year-old Lady Karina Hyacinth Reinhardt, life had always been one of comfort and peace with the secret abilities of her bloodline.As the beloved, yet sheltered, heiress of Moonveil Keep on the borders of the Kingdom of Caelthywn, she spent her days managing her father's lands and overseeing the affairs of their people, never knowing true hardship.War as she knew it was a distant nightmare that would never touch her.That was until Orpheus Van Merikh, the most feared warlord across the lands, invaded her home and seized it for his claims.Known as the devil himself, Van Merikh does not simply claim Moonveil for its riches, but also for the rumoured beasts that the Reinhardt bloodline conceals from the world.He will stop at nothing to have them.Thrown into captivity, Lady Karina expects cruelty, and Van Merikh, being the brute that he is, proves her expectations to be true.As a calculating and disciplined man who kills without hesitation yet protects what he claims, when one of his knights speaks ill of her, Orpheus cuts him down without hesitation.Lady Karina is his prize, but he would not allow others to dishonour her.However, she is not as obedient as one might think. Thus, determined to reclaim her freedom, Lady Karina refuses to cower as she challenges the enemy at every opportunity.Her defiance amuses Van Merikh, who spares her life due to her efficiencies in managing Moonveil Keep.Along the way, as they battle to find common ground, Van Merikh faces a rebellion among his own knights, who reject his growing attachment to her.They would have her dead before she warmed his bed.And oddly enough, Lady Karina finds herself charmed by the other merciful half of Van Merikh, but when her father returns to Moonveil at her request, much changes henceforth.Conspiracies arise and she soon slips out of Van Merikh's hold when he leaves for yet another conquest away from Moonveil.All hell would break loose when the beast from the depths would return upon Moonveil only to find his angel is gone.