The supporting character's harem is very normal - Chapter 432 Do you want to check?

Richard Santamo, a Jobless, idling bystander, stumbles upon a mysterious blue panel that grants him access to advanced technology and skills beyond human comprehension. With the power to shape his destiny, he must navigate his newfound abilities while balancing everyday life, friendships, and his mother’s expectations. As he sets his sights on business, innovation, and self-improvement, Richard quickly realizes that knowledge and power come at a cost. Will he rise above his humble beginnings, or will the weight of his ambitions pull him under?-----------[ DISCLAIMER ] -----------Please note that the entirety of this book is a work of fiction. All characters, names, businesses, locations, and events depicted within these pages are products of the author's imagination or have been used in a purely fictitious manner. Any perceived resemblance to actual persons, living or deceased, or to real-world companies, organizations, or institutions, is entirely unintentional and purely coincidental. The portrayal of any names, character traits, positions, or corporate entities in this narrative is fundamentally fictional and is not intended to represent, comment upon, or interact with their real-life counterparts in any way. Our aim is to provide an immersive story, completely detached from reality.Furthermore, neither the author nor the publisher intends to defame, discredit, or infringe upon the rights or reputation of any individual, company, or entity that may, by sheer happenstance, share a name or a superficial characteristic with an element found in this book. This creation is offered solely for entertainment purposes and should not, under any circumstances, be interpreted as factual documentation or a representation of real-life events, actual people, or existing circumstances. Its sole purpose is to invite you into a world crafted from imagination, with no ties to the factual world.

A high-schooler who loves playing FPS games were reincarnated in the fantasy world. And usually, those who were isekaid were blessed with overpowered magic and a legendary beast. However, our main character is different.Instead of those things, he awakened a shop system where he could purchase American freedom! And since modern guns is as good as magic, he decided to make full use of this ability and make a name for himself in this new world.Fireball? Cute. My M203 grenade launcher makes a bigger boom.Summoned beast? That’s nice, I’ve got a UAV with thermal optics.You can split oceans with magic? Cool. I can erase cities with a nuke.Whatever overpowered spell you’ve got, I’ve got something better.

An alien race invaded the Earth on June 6, 2128. At the midst of this war, many nations allied with the alien threat and the war nearly wiped out the rebelling humans of the planet. At the edge of mankind's survival, the United Nations Army launched its forces to eliminate the immediate stellar threats that loomed over Earth.

General Seeker Carlean, commander and leader of the mission, risked and gave his life to destroy the immediate stellar threat. The battle was won though Earth lay in ruins. Perhaps mankind will live to see a few years of peace before the alien threat returns to wipe out their existence.

At the immediate aftermath of the stellar battle, the fallen Seeker Carlean awakens and finds himself at aged 17, living the peaceful life he lived 16 years before he died.

So begins a new game in the battle for humanity's survival.

The dawn era after the end of the half century has gradually rebuilt the order, abandoned civilization, and is full of undivided violence and desire.
The noble and powerful pioneers are in charge of the city, and the evil and mad plagues are in the wilderness.
Pure human beings who cannot mutate are the weakest, dominated by the rulers of the pioneers, and are not as good as animals in the wilderness.
A purely humanized young man with a worldly experience has quietly entered the WTO, holding a three-foot long knife and a long-distance desire to boil in the world of purgatory. From the nameless name to the sorrow of the Supreme Court, the name of the black ride is resounding!

- Description from Uukanshu (translated)