Valkyrie's Shadow - Chapter 1Before the Storm: Act 1,

Before going to college, an ordinary high school student went to celebrate and got drunk. When he woke up, he found himself in a completely different world. There was a big sect, the approaching sect entrance examination, a slum where his body’s previous owner lived, and a shared memory about a missing young girl.

When he got tangled in a fight with a few punks in this different world, he fell off a cliff and miraculously found himself still alive, with two more voices ringing inside his head. They were Sword Master and Saber Master. In the company of them, he continued to find out more about this whole new world. He took the sect entrance examination, entered the sect, met a strange man in black, and even participated in a major competition of the sect to have a chance to win over his peers!
In this whole new world, he was born again and got to explore the fantastic martial world!

- Description from Novelupdates

The magical girl who made the wish of “destruction of this world” came to Ke Xue’s world, and Kewpie became a little Kewpie.

Being chased by someone holding a knife at the beginning, Shuangyue fell silent.
In a world without witches, how would she purify her soul gem?

Originally, he just wanted to be a good and hard-working employee in the winery, but the old man always liked the whole brainwashing operation. Suppressed by the world consciousness, for her own pure land, Shuangyue decided to go to his red square and black square, she would smash the dog world consciousness.

The protagonist is not a good person (highlighted), the three views have been distorted in the magic circle world, not a red square.

Little Cupid: You are my magical girl, and I am your Cupid.
————
Rescuing Matsuda Cat and Jingguang Cat, the protagonists directly built a gray empire for Jin Jiu and Sister Bei.
Hagihara and the squad leader are still dead, because the protagonist was not there at the time.
————
Do not dismantle the original cp, bring your own cp (but there is no obvious emotional line).

Content Label: Teen Conan
Search keywords: Protagonist: Frost Moon Saya ┃ Supporting roles: Gin, Zhufu Jingguang, Matsuda Jinping, Edogawa Conan, Maorilan, Kayao (Shirazawa Nozomi), Little Cupid (Ruby) ┃Others:

- Description from novelbuddy

Feng slowly backed up to the door, “W—what’s up with you both?” Two tall blond men stalked closer and caged her in the corner, “Aiden, Ethan, you both are too—too close,”

The Cloud Continent, respected for martial arts, the great world descends and the geniuses gather.

This era is a stage for the wicked.

Han Yu, who is a demon from the sky that swallows the body, rose after three years of silence, and since then he embarked on the path to hegemony by trampling and killing all kinds of evil spirits.

In front of Han Yu, nobody dared to call him against the sky, because the world can be swallowed, much less against the sky.