Re:Zero Kara Hajimeru Isekai Seikatsu - Chapter 59Arc 7, B - “Flop O’Connell”

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

Five hundred years later, a superhuman talent cultivated by the state perished during a mission, and his soul transmigrated, taking possession of the body of a young master from a prominent family who suffered from an anxiety disorder. From that moment on, his extraordinary life began, spanning across various fields such as business and medicine. Wherever he set foot, others could only look up to him.

The world is diverse and flourishing. Humanity has changed, and with it, brought in a new era of prosperity. Males and females still exist, but the spectrum from which humanity is cast has broadened. With the introduction of alpha, omega, and beta, humanity has evolved even further.In such a word, Dr. Andrew Knox, known environmental researcher, is happy being a beta male. It has made his life easier by being middle ground, and as much as some wish he was one way or the other, he’s happy being who he is. Thriving even.He works in a world renowned research facility. He makes friends easily, and his projects are always funded. He even found someone who he thinks he could end up marrying if things continue in the right direction.That, and the vacant house next to his apartment building gets bought by a new neighbour. A cute, but cautious omega who relies on Andrew as a beta for help. Andrew couldn’t be happier. He loves being a helper, and loves when people rely on him.All in all, Andrew really thinks he has everything made.That is, until a research project with shoddy data is thrown back into his face that he has no recollection of working on, and all of his reputation disintegrates in between one heartbeat and the next.Heartbroken, it isn’t until Andrew wakes up, chained to a wall that everything becomes clear. He becomes a test subject to one of the scientists that he trusted. That he expected would never harm him.The life he had known, where he was a respected researcher was ripped out from underneath him. His identity and everything he’s ever known is stolen from him from a crazed researcher who he had trusted, maybe even loved.He has to relearn who he is, what he is, from scratch.Thankfully, he has one person in his corner. He just never expected to have to rely on someone whose shoulders were so small.This is an a/b/o story, and will have those tropes associated with it. I hope you enjoy :)

Defiance of natural order of a single young Dragon soul.