I Don't Want to Get Hurt, So I'll Max Out My Defense - Chapter 2017 - 2045: Emperor, Shall We Join Forces?

Three years ago, she was cruelly abandoned by the man she loved deeply, leaving her to walk down the aisle alone while heavily pregnant. Three years later, she reappears transformed, stunningly beautiful, and says with a smile, “Husband? I don't need a husband.” The man behind her narrows his eyes, his thin lips turning into cold blades, “Qin Yan, try saying that again?”

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

Uchiha Yu traveled through and came to the crisis-ridden Naruto world.

Looking at the scarlet writing wheel in the mirror, Uchiha Yu nodded with satisfaction: “Well, everything is going well so far… smooth hammer!”

Looking at the calendar on the wall, Uchiha Yu felt the malice from this world…

In order to save his life on the night of the genocide, and even take food from the tiger’s mouth, Uchiha Yu decided to train Pokémon hard from today!

Uchiha Yume, use illusion!

A trainer: “Referee, Yu’s dream demon is illegal, it uses illusions!”

Uchiha Yu: “Humph, you absolutely cannot escape this technique!”

Deidara: “Explosions are art!”

Uchiha: “My Pangyan monster’s art is better than yours!”

- Description from novelbuddy

“There are no heroes in war, only monsters.”This was an outlook that Sato Katsuro, a man in service to the military, formed after being broken down by years of gore-filled battle.It was an outlook that he took even to his grave...but what about beyond it?Reincarnated into a new world of fantasy and tasked to be the very thing he'd given up on becoming, Sato would have to fight a new war. A war between mankind and an oppressive enemy regime run by a cohort of demons.But, as Sato learned in his past, war wasn't always what it seemed. In war, truths were lies, friends lurked as enemies, and the so-called heroes...they were often the villains.