The Frontier Expanse [Shonen jump]

Five hundred years ago, a master manipulator and rogue player named Vance Akuma did the impossible: he tricked the heart of the world, stole reality's source code, and turned the universe into his own personal casino. Welcome to The Frontier Expanse. A hyper-monitored mega-city where humanity is strictly divided into regulated classes, and brute force is a mathematical impossibility. In this world, attempting to overpower the system triggers Vektor degradation—a brutal, built-in physical limitation that violently tears your nerves and destroys your cells from the inside out if you try to force your power. To survive here, you have to be a thinker. Lucian Kotsu is a sixteen-year-old rogue Innovator hiding in the dark, subterranean underbelly of the city. He isn't a chosen hero, and he isn't a god. He is a cynical, nonchalant glitch in the database who lives in isolation with his black cat, Neko, dealing with a deep psychological scar that makes human affection feel like a physical blade clamping his heart. He doesn't want to save the world; he just wants to survive it by reading the geometric kinetic lines of reality through his dark-framed lenses. Vance Akuma sits in his stolen paradise, a control freak who is profoundly bored, deliberately throwing reality-warping challenges and elite entities at Lucian just to toy with the one kid who won't stay in line. But the god-king made a faulty calculation. Lucian isn't trying to punch harder than a god. He is analyzing a 500-year-old code, locating the exact structural loopholes in the math, and preparing to break the Frontier's fingers off the board. He just has to learn the ultimate lesson first: one genius cannot overthrow a living lord alone