Secret World of Occultists - Chapter 18: Reflecting the Stars

Lin Wudao has traversed, and there is an invincible corpse collection system.

As long as you collect the corpses for the strong, you can get the things they owned or touched as rewards during their lifetime, and the obtained items are still strengthened.

Lowest, ten times stronger!

[You collected the corpse of the great emperor Jiang Taichu, and gained ten thousand years of cultivation! 】

[You collected the body of your fiancée Jiang Qingxue, obtained the Zichen Sword, a humane spirit weapon, and after strengthening it ten times, it was upgraded to become an extreme spirit weapon, the Xuantian Ancient Sword! 】

[You collected the bones of an immortal, obtained a ray of immortal origin, enhanced it by 100,000 times, and upgraded it to become the original origin of Hongmeng. After refining it, you can be promoted to the immortal emperor! 】

…

Since obtaining the invincible corpse collection system, Lin Wudao has embarked on an invincible road that can push through the ages and suppress the heavens.

- Description from novelbuddy

In a world where villains are crafted, not born, Vyan's life takes a detour from dull to downright dramatic faster than he can say “abracadabra.”Meet Vyan, the most ordinary knight in the realm, with all the magical prowess of a damp sock. Loyalty? He's got it in spades. Betrayal? Well, that's the surprise twist in his not-so-fairy-tale life.Framed and forsaken, Vyan is left with nothing but a grudge and some pretty gnarly scars, courtesy of his once-master, Iyana. Oh, did he mention she is the daughter of a marquess and the object of his unrequited affection? Talk about adding insult to injury.Just when he is ready to unleash his inner berserker, a butler comes along with news that makes his hair stand on end: Vyan is the last heir of the Grand Duke's mage dynasty!With power crackling at his fingertips and more mana than he can shake a wand at, Vyan is ready to show the world what happens when you underestimate the underdog. Will Vyan rise from the ashes like a phoenix, or will he crash and burn like a fire-breathing chicken? There's only one way to find out.

Nie AnAn woke up one day and realized that she had transmigrated as the villain’s adoptive sister.

In the novel, the villain conquered left and right, and his always woe-is-me younger sister was always cleaning up after him. The two of them were rightfully the grim reapers in the book.

The very next day after her transmigration, the soft and delicious Nie AnAn passed out from seeing blood.

And so —

The shivering competitors noticed that their nemesis’s sister had turned to a delicious treat — and wanted to protect her;

The original male lead noticed that young Miss Nie, who had been chasing after him this entire time, wouldn’t even give him the time of day anymore — and felt unbalanced;

Young Master Nie was very happy that his parents had two kids back then– she was so GD cute;

A certain cold blooded and violent villain had been going home earlier and earlier, and the way he talked was becoming gentler and gentler.

Villain Brother: AnAn, come over. Let me try some of it.
Nie AnAn: Hold on, gege. It’s not ready yet.

- Description from Novelupdates

Accidentally, she got pregnant.