DxD: I Steal Luck - Chapter 62: Fair Game

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

Outer Sect Disciple Chen Yu, assimilates within his body a fiendgod heart.

The heart, is the backbone of life, the human body’s fatal vital point. And it can be said that Chen Yu’s heart is actually his strongest defense point, and permits him to overtake demonic beasts, or divine beasts unlimited potential.

Henceforth, he steps onto the stage and surges forth on a magnificent scale, in a heart-rending mysterious journey.

Talented as a cloud, an unparalleled supreme talent.

10,000 races glorious, cross boundary battles.

Only my heart, eternal!

- Description from Novelupdates

The cycle of life is not infinite—except, perhaps, for Elijah.At 122 years old, Elijah lived a long and successful life—until he woke up as someone entirely new. Now, an anomaly in a mysterious kingdom sustained by magic, he faces questions about his place in a world that doesn't defy the laws of nature, but take them to an entirely new level.For over six millennia, this isolated realm of 300,000 citizens has thrived, its survival bound to the magic that nurtures its air, water, and food. Yet, some whisper that a kingdom refusing to expand is doomed to fall. How, then, has this kingdom endured?As Elijah uncovers ancient secrets, dives into treacherous cave systems, and grapples with the fatal flaws of magic, he learns the truth about existence itself—forces that shaped the cosmos. New alliances rise to confront an ancient plague, and the kingdom's delicate balance teeters on the edge of collapse.In this world, the vibrant hues of freedom and potential are mere illusions, like sunlight filtered through stained glass. Elijah must decide whether to shatter the illusion—or embrace it.————This novel goes into great detail about the ways of the people and how it will differ from the suspected outside world. What seems like a population of people who do not have much knowledge, show how they found their way by “feeling”, or by anecdotal(personal) evidence.

Holy Lord, possesses the ability of zodiac signs, dragon charm, can spray high-temperature flames, pig charm, emits laser light from both eyes, horse charm, heals all injuries, dog charm, immortality, rabbit charm, possesses light like or even surpasses light speed, chicken charm, suspended in the air, monkey charm, transform into any form, snake charm, transparency, sheep charm, soul out of body and even control soul, tiger charm, adjust yin and yang, rat charm, grant the ability to move still objects , the cow charm, has infinite power (some abilities are fabricated by me), this article is about the protagonist who has the Holy Lord system, travels through many anime worlds, and promotes his majesty… [Diga (in progress) Hokage (unfinished) Open) Pirate (unopened) Attack on Titan (unopened) Tokyo? Brother Zheng ㄎ Chun? Kai) Conan (unopened)…〕

- Description from novelbuddy