Elf Tensei Kara no Cheat Kenkoku-ki - Chapter 6Book 2: -2: Fire Fox Traditional Cuisine

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

Humanity has conquered half the galaxy and the Age of Mechs reigns supreme!Ves Larkinson lacked the genetic aptitude to become a famed mech pilot. Fighting against his fate, he studied mech design in order to express his love for mechs as a builder instead of a soldier.When Ves graduated from college, he returned to a new but empty boutique. Left with a small, newly founded mech workshop that his father painstakingly built with a mountain of debt, Ves somehow needs to make ends meet with the bank breathing down his neck.In the midst of his despair, he found salvation from another legacy his father had left."Welcome to the Mech Designer System. Please design your new mech."--Join The Mech Touch's unofficial Discord server: https://discord.gg/APB5KCU

By coincidence, Li Yunmu found a super machine from humanity’s age of darkness. From that point onwards, his ordinary life would never be the same! Aptitude? Innate talent? What are these? Could they be eaten?

I have neither aptitude nor innate skill, but my shadow can level up using hacks. Experience, Ability points, battle prowess… all of them could be hacked. Even while he is asleep or tired, he could still increase his skills.

- Description from Novelupdates

Tan Shuchang had always considered himself born into a scholarly family and had also been a young star atop the honor roll, a true parasite of the upper class. He should have been holding significant local authority, receiving endless gifts, spending boundless money, enjoying innumerable years, and marrying countless concubines. How had he ended up becoming a demonic cultivator? After pondering for a long time and still not understanding, he slowly emerged from the pool of blood, deciding to think it over gradually…