The Devil Does Not Need to Be Defeated - Chapter 261: “Not To Be Provoked, Not At All.”

Having trusted the goddess who promised my return to Earth, I joined the hero's party and defeated the Demon King.So when that promise was not fulfilled, it was only natural for me to desire my own fall into darkness.Harem | Fantasy | Sex | R18 | SMUT

The end of the world is coming, the world has undergone great changes, and everything has changed. Plants, animals, and even insects, as long as there are living things, have mutated.
Become more powerful, and even evolved supernatural abilities, such as chickens and ducks that can fly to the sky, such as cats and dogs that can breathe fire.
But only humans, without any obvious changes, seem to have fallen from the top of the food chain to the bottom of the food chain overnight.
Any creature that can open its mouth to eat can treat humans as food.
But fortunately, this world has not completely killed humans. Gradually, humans discovered that they had the ability to cultivate compatibility with other creatures.
As long as it has a high degree of compatibility with some powerful mutant creatures, it can be used for its own use to achieve the purpose of protecting itself.
Fang He is a person who is very compatible with mutant animals, but it is also because of his ability that he has changed from the strongest to the stupidest.
Fang He, who was reborn, said, “Hmph, this time…”

- Description from novelbuddy

A high school boy meets an unfortunate end by a well-meaning but bureaucratically incompetent god. As an apology for his accidental demise, the god offers him reincarnation in a fantasy world—complete with a powerful cheat to ensure his survival. However, due to a small clerical error, our protagonist is reborn as a girl!Determined to make the most of her new life, she boldly declares, “Give me the strongest weapon imaginable!”—only to be granted… a harem of overly devoted female soulmates?!Now, stuck in a medieval world filled with magic, monsters, and gorgeous women vying for her affection, she must navigate her bizarre fate while somehow becoming the legendary hero she was meant to be.Will she ever find a way back to her original body? Can she survive this world without succumbing to yuri-fueled chaos? And most importantly… does love truly conquer all?!One thing’s for sure—her adventure is about to be way more complicated than she expected.

Rimu Dynasty, Kingdom of chaos. Demons were rampant, and it was difficult for people to live.

Gu Qing’an had not yet had the opportunity to appreciate his beauty upon transmigrating in this world, as he had to face the demon who targeted and devoured humans.

Fortunately, she had a system.

“I, Gu Qingan, have never been weaker than others. System, add it to me.”

……

Many years later, Gu Qing’an, standing on the frozen void, looked at the newly discovered strange world under her feet without any expression.

“Compared to human beings, alien existence is a demon,” she thought to herself.

“Then, are all creatures in this entire world considered demons?”

- Description from Novelupdates