MTL - Book of Technology - Chapter 437 deal with

Good Looks: Check!
OP Skills: Check!
Face Slapping: Check!
PP Size: Check!

Lucien was more than ready to embark in his new adventure to save a dying world from destruction as part of the Heaven's Gate Project.

However, just as he was about to be sent to the world that he was about to save, an accident happened, which forced his Patron God, the God of Gamblers, to take another gamble in order to preserve his chosen candidate's life.

Lucien, who's new identity was named Lux, found himself in a world where darkness could be light, and light could be dark. A world where morality was but a thin line from depravity, and a happy ending could only be gained, by facing the world and slapping it with a Legion of the Undying.

Xu He had been his sister’s control group since he was a child. His elder sister was fair, juicy and good at giving birth. She was the heart of the Xu family, a flower in the village, and the talented people who wanted to marry her lined up from the village to the back of the mountain.

The little brother was only good at cooking, and he was busy from the stove to the field all day long, and no one paid attention to his disheveled face. People in the village talked after dinner, how the same parents had two very different children. With his sister as a comparison, it must be more difficult for He ge’er to marry. 

However, there were many young men looking for Xu He, but these people who got close to him were all to find out about his sister. Xu He had been used to it for many years, but recently, even Zhang Fangyuan, who was not doing business in the village, wanted to get something from him.

After inquiring, he tried to hide, but he was stuck on the way home, but the man said: “He ge’er, your cooking is delicious, and it will be even better if you are my fulang.”

- Description from Novelupdates

Age difference of 700 years, vampire theme, cultivation, grammatical
This article is also known as “How to fall in love with an arrogant and abstinent old man”
That day, the girl was picked up by Mu’s house, covered in scars.
Everyone wondered, Mu Fei was so arrogant and cold, how could he accept such a small stutter.
The cold-hearted hostess felt a headache, “When are you going to follow me.”
“You, like, flowers, I, I think, for you.”
The girl’s heart was full of affection, and her little scarred hand held a bunch of purple flowers and handed it to the sweetheart who only belonged to the darkness.
An awards ceremony ten years later
Someone asked her: Why does Miss You always cover her neck every time she shows up?
You Ran’s expression was subtle, and he could only explain lightly: “I’m probably afraid of the cold.”
In fact, she was also helpless.
After all, the adult she admired was a cold-blooded clan who had lived for more than seven hundred years and was picky and obsessed with cleanliness. His greatest hobby was—
bit her neck with fangs,
Leave that exclusive bite/mark mark.
Even if the painful tears fell, she was willing to make each other’s blood-fed desserts.
Because she will be her nightingale in the end.

“On her lips is what my heart desires”
One-sentence introduction: After the pure complex stammering poor cub (true boss) was picked up by the high-cold abstinence blood clan, the romantic love story of “the following crime”.

Instructions for reading:
1. Abstinence, arrogant vampire noble x stunner in the world, crazily criticizing beauty
2. Mr. Mu Fei has two little hobbies: biting Yu and his neck; watching plays and movies.
3. This article is empty, the background is private, and the dark color of Cthulhu, please do not delve into it.
4. Two-way sweet pet/master/servant/cultivation/birth/age difference 700 years old/HE
5. Scarf @ Xia Sugar Suxi

Content tags: strong, soft spot, blood family, cool text
Search keywords: Protagonist: Mu Fei, You Ran ┃ Supporting role: ┃ Others: “Human” x Vampire, contrast cute
One-sentence introduction: innocent and crazy criticizing stunner & arrogant abstinence blood family
Intention: Firmly believe in the sun.

- Description from novelbuddy

Derek McCoy was a man that since his youth had to face many adversities. Often forced to settle with surviving rather than living, had finally found his place in the world, until everything was taken from him one last time. After losing his life to avenge his brother, he reincarnates until he finds a world worth living for, a world filled with magic and monsters. Follow him along his journey, from grieving brother to alien soldier. From infant to Supreme Magus.

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Tags: Transmigration, Male MC, Western Fantasy
Schedule: 1 chapter per day
Chapter Lenght: 1700 - 2000 words but usually are even longer
Warning: The MC is not an hero nor an anti-hero. He is a broken, cynic and misanthropic person looking only for his own gain. If you are looking for a forgiving, nice, MC that goes around saving people in distress, this is not your cup of tea.
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I don't own the cover but wasn't able to find the author.