Destroying My Own World - Chapter 25 - : Found you.

High school student Misumi Makoto is called into a fantasy world by the god Tsukuyomi, in order to be a hero. However, the Goddess ruling the world isn’t as thrilled to have him there, and kicks him to the edge of the world. Tsukuyomi declares that Makoto is free to find his own way after Makoto is abandoned by the other Goddess.

She was reborn as the antagonist of a fantasy novel, a child who bears her family’s resentment.

As it stands, her fate is to end up on the guillotine at the hands of the furious villagers!

Kynemeia, for the sake of a comfortable future, plans to gather some Munchkins to govern the fief. However, there’s one problem…

Kynemeia stared blankly at the boy sitting in the underground prison.

“…Why?”

“I got caught.”

She’s on the receiving end of an unwanted obsession from a suspicious mage?!

This is the story of the struggles of a Grand Duke’s daughter who wishes to transform her life
and the Munchkin mage who feigns innocence!

*Munchkin: a Korean slang for a character with overpowered skills.

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