A Guide to Raising Your Natural Enemy - Chapter 54

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

I fell in love. Her name was Shirasaka Yukino. I could only look at her from a distance. However one day I heard that she already had a boyfriend. Even if I love her, I can’t have her. The devil sent me an invitation. I can make her mine!

"God of Mischief is interested in you and wants you to be his emissary. Do you accept?"

With blood and wounds covered his entire body, the voice echoing inside his mind was like that of a hope shining upon him.

In the glorious future era, mankind had discovered the bottom of the sea and conquered the sky, but they also accidentally opened the Pandora box that shouldn't be opened. They found a place where lived numerous unknown creatures.

Here, humans will wrest their lives to step upon their greatest evolution and create their own myths, including Theodore.

Faced with betrayals, surrounded by beasts, and faced with imminent death, he answered with resolve and tenacity.

"Yes!"

Aron was a child of the unorthodox beast monger race that thrived in what many considered hell itself, Limbo. A place full of chaos, death and misery where only the strong, cunning and cruel survived.

Follow Aron’s vicious journey as he faces the most dreadful of beasts, the most talented of humans, and many other races for their power and territory, all for the sake of pursuing knowledge and true understanding of Limbo and the secrets it holds.

An existence that grows to be feared, respected and even worshipped by some wherever he goes.

This is the bloody tale of Aron Limbo.

“Why would I do something that doesn’t benefit me? Be selfish and be cruel because life will never take pity on you. If you can’t accept this truth then you and I walk very different paths.”