Tomodachi no Imouto ga Ore ni Dake Uzai - Volume 1, Epilogue

Criminal Psychologist, Su Xiao Pei, who was an leftover woman in her modern life, was informed by the God Of Marriage, Yue Lao, that her destined lover was in a car accident, his soul was sent to another world. Su Xiao Pei was ordered to bring back this strange man who was connected to her by the red string of fate. Otherwise, she will live the rest of her life in loneliness, with no one to support her.
But how does that man look? No idea.
What’s his personality like? No idea.
What does he do for a living? No idea.
Can she not go? Of course not.
Su Xiaopei, who believes in all things logical has run up against a serious wall this time.
The bottom line: This is a story about a modern female psychologist who has traveled back in time and an adorable warrior as they talk about love and solve crimes.

- Description from Novelupdates

Hou Yang stepped on the air when he rushed down the stairs only to wake up and find that he had exchanged bodies with his wife Shen Rongrong!

After the swap, Hou Yang threw up every time he ate and felt that it was necessary to go to the hospital for a check up but was stopped by Shen Rongrong.

“No need to go to the hospital.” Shen Rongrong said calmly, “You’re just pregnant.”

“????!!!!” Your mother*, this was too much!

* 特麼 / TM: His mother; (slang) 特麼 has the same pronunciation as 他妈, a Chinese slang that literally means f*ck you.]

Huo Yang realized that he was not only pregnant, but also had to complete the dubbing work of his wife.

The inexperienced Huo Yang, “….Alright.”

As a result, he accidentally became the top trend in the dubbing circle and stirred up a tumultuous storm.

Fans were crazy for him: “Ah! ah! ah! ah! So sassy, so stunning, so beautiful! Sister Rong is the best!”

- Description from Novelupdates

Kai is the hardest working warrior in his generation... and the unluckiest. In a world where most people receive magical skills, classes, or cultivation, Kai has nothing but his wits and his strength. His only choice will be to forge a new path against fate, no matter where it takes him.

Savage monsters pour endlessly from the wasteland, threatening the survival of civilization itself. They say that human strength isn't enough and only those gifted with destined powers have a chance of making a difference. Kai is hungry to fight in that war, to be someone who matters. That hunger will take him across a world stranger and more terrible than he could possibly have imagined.

A college student, accidentally reborn into the world of Naruto, becomes a member of Uchiha who is destined to be exterminated.

In this cruel ninja world, in the face of endless wars and exclusion from the village, what will Uchiha Qing do?

PS: Later in the book, the protagonist will develop a system of immortal cultivation. Cultivating Immortals in the Ninja World, have you seen it?

- Description from novelbuddy