I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too

At twenty-three years old, Y/N tenjou operates on a plane of existence completely detached from ordinary humanity. On Earth, he is a phantom billionaire-a reclusive, calculating corporate titan who manipulates global markets and private security networks from a heavily guarded executive suite in Tokyo. But beyond a hidden dimensional door in his late grandfather's house lies the Great Demon Territory, a brutal world of monsters and magic where Y/N is known by a far more terrifying title: The Merchant King.

Armed with absolute, reality-bending spatial magic and an unyielding intellect, Y/N rules the Argenan underworld from the shadows. Alongside his younger brother, Yuuya-the legendary Calamity Slayer-Y/N lives a dual existence of extreme contrasts. One moment, he is treating his Earth-bound loved ones to peaceful afternoons in the Philippine Sea; the next, he is erasing Calamity-class beasts from existence and dismantling corrupt royal factions to protect Princess Lexia and her loyal assassin, Luna.

As the malicious Vile faction begins to fracture the very fabric of space, threatening to spill the apocalyptic horrors of the Other World into the fragile, mundane sanctuary of Earth, Y/N must step fully into his power. Balancing a shadowy global empire, dimensional warfare, and the women who anchor his soul to both realities, the Merchant King is about to prove that he will burn the universe to ash before he lets a single monster touch his family.

A sprawling fantasy adventure of absolute power, lethal politics, and unbreakable loyalty across two distinct realities.