Reincarnated Mercenary on Duty - Chapter 19 -

He possessed the Xuan Gate Medical Arts and had fortuitously obtained a heaven-defying Spiritual Treasure!

10 years ago, after “the Gate” that connected the real world with the monster world opened, some of the ordinary, everyday people received the power to hunt monsters within the Gate. They are known as “Hunters”. However, not all Hunters are powerful. My name is Sung Jin-Woo, an E-rank Hunter. I’m someone who has to risk his life in the lowliest of dungeons, the “World’s Weakest”. Having no skills whatsoever to display, I barely earned the required money by fighting in low-leveled dungeons… at least until I found a hidden dungeon with the hardest difficulty within the D-rank dungeons! In the end, as I was accepting death, I suddenly received a strange power, a quest log that only I could see, a secret to leveling up that only I know about! If I trained in accordance with my quests and hunted monsters, my level would rise. Changing from the weakest Hunter to the strongest S-rank Hunter!

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

Steven was experiencing one of his worst days ever. After he found out that his girlfriend was cheating on him and was forced to quit his job because of his abusive boss, he wondered if anything good could still come out of the day.To make things worse, he was hit by a car on his way home and a strange screen appeared in his vision.But who would have thought that the screen that appeared would not only save his life, but also change his life completely in ways he never imagined possible.[Rebate System: You can trigger varying levels of rebate, from 1.5x to 10x, by spending money. Rebate rewards will vary depending on the amount spent.]“Wait, what? Really?”[You spent $28. A 3x rebate was triggered.][You received $84. The money has been sent to your account.]“Yes! It's real.”From then onwards, a completely new world was opened to Steven, and it was one far more dangerous than the one where he was struggling to make ends meet.***Disclaimer: 'Richest Man: It All Started With My Rebate System' is a work of fiction. Names, characters, businesses, places, events, locales, and incidents are either the products of the author's imagination or used in a fictitious manner. Any resemblance to actual persons, living or dead, or actual events is purely coincidental.This book may reference real companies and organizations, but these references are for narrative purposes only and are not intended to depict actual conduct or involvement of these entities. The use of these names and references is not meant to harm, defame, or discredit these companies or organizations.***Discord server link: https://discord.gg/EAZWYqQ36j