I Am the Nanny of the Villain - Chapter 73:

In her previous life, Yvonne Taylor died with hatred. Her stepsister burned her face with sulfuric acid, and her father was brutally murdered by her stepmother. Even Zachary Leinster, her father's best friend and the man who loved her the most, died trying to save her.Yvonne is miraculously reborn and begins her revenge.When she comes back, she is no longer the playful girl everyone knew. In order to take revenge, she applies for a prestigious school, majors in business, caters for her stepmother, and even... marries Zachary Leinster, her father's business competitor and ten years her senior.

An Xu opened his eyes and found that he was in a world with both ABO and supernatural abilities.
She pinched her face hard, but it didn’t hurt at all.
So this female alpha and lightning power user happily thought,
It’s rare to have such an interesting dream, and I’m blunt. (=￣ω￣=)
A painless aristocratic girl who traveled to the world of ABO+ supernatural powers,
The mentally retarded otaku who thinks he is dreaming, lives as he pleases in another world,
I mistakenly hit the promotion and salary to be a unparalleled king.

Female A male O, simple and rude middle school girl (female lead/alpha) X feeds a tiger brain to make up a knight (male lead/omega), cool writing, puppy blood when falling in love.

An Xu: Hey, am I not a teacher of justice?
Chris: ……………
Everyone: (No, no, I don’t think it looks like the villain’s side is better!!)

hint:
1. ABO world view, female A male O (say important things twice);
2. The heroine thought she was dreaming, and for a long time has been the crazy devil king in the eyes of everyone, and she is absolutely not pure and flawless in terms of morality
3. The hero Chris is a growth-type holy father, gradually evolving
The above points should be cautious, if you can’t accept the setting, please let it go

Content tags: strong female power soul conversion knight and sword
Search keywords: Protagonist: An Xu (Anna Sullivan), Chris Field ┃ Supporting roles: Nancy, Esther, etc. ┃ Others: female A male O, female attack, cool text, invisible pretense, brain Complementary heroes, ABOs, abilities

- Description from novelbuddy

Revenge is merely a method of passing time for someone like Lee who has lived several lifetimes, but the desire to acquire superhuman, godlike powers becomes an obsession that pushes him beyond limits. It’s a struggle to grow up in the world ruled by masters who bend elements to their will, with little hope of learning their cultivation secrets, but they are still there for taking for those with wit, persistence and the ability to take risks.Join Lee on his adventurous journey where every challenge, setback and achievement brings him closer to divinity!

Knox is an omega – poor, orphaned, weak, and bullied. He was the unluckiest human being alive – according to his own.Burdened by debt, he has no choice but to stop school and work to pay off his loans all the while hiding the truth and pretending as a beta to save himself from harassment. He accepted all legal jobs he could get to make ends meet.Including a contractual relationship with an alpha who’s suffering from a pheromone disability. He gets paid – enough to free him from all of his debts. All he has to do is help the alpha stabilize his pheromone…not until that night happens…The contract was breached. Knox has to pay the price. Afraid of his circumstances, he ran away.Years later, Knox became a capable man. He has a nice job and a kind boss. When his boss got invited to an engagement party, as his secretary, Knox had to come with him. However, he was shocked to find out that the man to be engaged was none other than the spitting image of his son!How will Knox keep the truth from him, when after their eyes met at the party, the alpha had already marked him as his property, claiming him as the payment of the contract he breached?Will Knox hide and run away again? Or will he choose to pay off the debt to be free? Will he be able to push away the alpha whose vices are hidden behind his attractive mask or will Knox abandon his virtues and embrace the dangerous father of his son?