I'm the Owner of the Pokémon Day Care In the World of Pokémon - Chapter 1404: The Return of Marshadow

Shaman, a normal teenage girl falls asleep on the eve of her 18th birthday like any other night. She awakens to find herself in an unknown place in an unfamiliar body with an unhelpful voice in her head.

On top of that, she has gained fox ears and a tail, she also seems to have memories of this new world and the body she finds herself in. Unfortunately not all of the memories are clear and she must rely on this rpg like system in her head to both unlock these memories and guide her on a path home.

As she explores the world she finds that it is somehow both modern and old, with magic permeating every day life. Architecture reminiscent of the 1700s clashes with modern day conveniences enabled through magic.

Will Shaman be able to make use of her knowledge of video games and novels to take advantage of her rpg system in this new world? Or will she be dragged down and entangled by the darkness of the world around her as she searches for the truth behind her circumstances? Many eyes are upon her as she takes center stage in this new world.

What? Your future wife is a peerless killer, an underground queen?

Sorry, just killed her the other day.

…

I heard that your girlfriend is the famous champion of China, the dream lover of countless people?

Um, she was too tired and fell asleep at night, you can come to her tomorrow.

…

I remember that the abandoned store of the second uncle seemed to be bought by someone in a month or two.

Hurry up and exchange the useless places in the training house with your cousin for the abandoned store.

Then resold at a price of 10 million alliance coins.

…

What?

Xu Yang rescued a legendary elf and took care of it for a month.

Yi Lam knocked Xu Yang unconscious with a sap and threw him out.

The legendary elf who regained consciousness saw Edward Lam.

He was so grateful to him that he willingly became Edward Lam’s elf.

- Description from novelbuddy

As a kind of punishment, the wings of a demon king were cut, and he eventually lost all of his power. To get back his power, he made a deal with the angel. He will go to the realm of humans to find a special girl with a special skill who is meant to be her queen. If the woman got pregnant, all of his sins would be forgiven, and he will regain all his powers. But he didn’t think that knowing her would be an adventure for him as the king of demons in the human realm.

My childhood friend went to the academy.