My Shadow Monarch's System - Chapter 9: A New Attribute.

The older sister flees from her wedding to be with her lover, and her younger sister is forced to take her place in marrying a very powerful man.

—

As luck would have it, she ends up transmigrating into the body of that younger sister.

Although the man that she weds is very powerful, he’s the irredeemable final villain.

All villains are doomed to a bleak ending. And, as this villain’s wife, she’s afraid that her ending won’t be good either.

Fortunately, the older sister had gone back in time after having experienced a lifetime of suffering. This prodigal daughter returns to the turning point of her life. Pointing at her younger sister, she demands for her younger sister to hand over her husband.

Looking at this beautifully crying older sister, Ye Zhen swiftly yields and says, “Older sister, don’t worry. I haven’t even done anything with brother-in-law!”

—

To her shock, she later discovers that she’s pregnant.

With tears in her eyes, her older sister says, “Didn’t you say that nothing happened between the two of you?”

—

Ye Zhen looks at the great villain that doggedly pursues her. She is utterly and totally doomed.

—

There’s a great villain lying next to her, and she’s pregnant with a mini villain. How’s she suppose to survive?!

—

Later on, as Ye Zhen watches the great villain putting the baby down and changing the diaper, she sighs. “There’s nothing that can be done. I’ve already missed the golden opportunity to turn things around. How can I leave now?”

- Description from novelupdates

Unexpectedly arriving in a world where humans and Pokémon coexist in harmony, Natsume inherits an abandoned farm.With Pidgey soaring through the skies and Heracross resting under the shade of trees, the world’s vivid reality unfolds before him.But instead of aspiring to become a Pokémon Trainer, Natsume seems more inclined to embrace the life of a farmer.Natsume: “It’s decided. From today on, I’ll be a farmer.”However, as time goes on, Natsume starts to realize that his goals may have shifted just a little.“Champion Natsume, are you saying you originally just wanted to be a farmer?” a reporter asks earnestly.Natsume: “Would you believe me if I said it wasn’t entirely my choice?”

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates

A broken man who ended his own life finds himself reincarnated into the game he used to play. However, instead of becoming the protagonist or a powerful antagonist, fate places him in the role of a minor villain—a mere stepping stone for the protagonist in the game's first arc.