The Reborn Otaku's Code of Practice for the Apocalypse - Chapter 255

The Yan family and the Song family have a commercial marriage.
Song Nianying’s fiancée, Yan Chuyu, is known as a vampire on earth.
She has a feminine beauty, fair skin, bright red lips, and always has a seductive fragrance on her body. She has been educated by the heirs since she was a child.
But when two people try marriage together.
It was only then that Song Nianying realized that her wife was so cute.
She would actually blush because of a small approach of hers, and would often stare at her slender neck in a daze.
When she teased her again and again, Yan Chuyu would say coldly and arrogantly, “Don’t get too close.”
Song Nianying smiled and continued to approach, Yan Chuyu stared at her with eyes like ink: “This is the first time I have warned you.”
…
When she received the 320th warning, Song Nianying was ready to move, and decided to overturn the warning and take her down.
But that day.
Thunder and lightning flashed in the sky.
Yan Chuyu sat at the highest point of Xuanming Pagoda, her eyes were bright red.
Beside her, a maid with a pale face and blue eyes lowered her head and asked, “Wang, what is it about the house that makes you so afraid to go back?”
She has been with the king for so long, and she has never seen her so anxious and terrified. Could it be that she is a wolf clan?
Yan Chuyu raised his left hand and caught a bolt of lightning, forming an electric ball, and slowly replied: “My wife.”

Content tags: under the year, blood race, ability, whimsical, fantasy, mutual attack
Search keywords: Protagonist: Song Nianying, Yan Chuyu┃Supporting role: ┃Others:

- Description from novelbuddy

The world ended, seven days of earthquakes, volcanic eruption and then came the meteor storm, bringing something worse—mutation.Now, survivors are group into Shifters, mutated humans and normals.Ava Zhang was supposed to be a Normal. Useless. Disposable.Thrown into a military-controlled bunker, she is sorted into Level Three—the bottom rank, where the weak are left to rot. Starving, overworked, and surrounded by desperate scavengers, she realizes that in this world, strength decides survival.But Ava isn’t as powerless her hidden System activates. The Blueprint System—an ability that lets her design and invent anything, from weapons to high-tech defenses.

The extraordinaire has disrupted the silence of the world and ever since then, technology has taken a different path.

Arthur got randomly transported to another world. Some people would find that terrifying, but not for him, who was tired of his old life; it was an opportunity.

And, after having bad luck all his life, the tide changed.

It was a world of magic where wizards fought side-by-side with their familiars. Arthur got summoned to be one of these so-called familiars.

He was furious. The thought of becoming a pet was not something he liked. Well, that changed when he saw who his master was.

A hot-woman. And, to make everything better, Arthur was inside the Frostpeak Magic Academy, which only had women students.

“This is heaven. All familiars are beasts, but I'm different. I'm a good-looking man inside a place filled with hot girls.”

When he thought his luck could not get better, he unlocked a system that helped him with everything. Of course, he used the system for a greater good, like getting girls.