If you’re tired of protagonists who coast on luck and endless chatter, give Su Xiao from *The Paradise of Demon* a try. From the very start, this ruthless man kills his own enemy and gets dragged into a mysterious space—there’s not a trace of saintly mercy in him. His first world is *One Piece*, where he’s outclassed, starved for intel, and surrounded by deadly threats. Yet, with nothing but a cool head and a long blade, he carves a bloody path through the Goa Kingdom—assassinating the king, hunting a giant tiger, and maneuvering between pirates and nobles, every step a razor’s edge. What truly hooks you is his resolve: “If I want to get stronger, I’ll pay with my life.” He doesn’t rely on talk or teammates. Every fight is visceral, every scheme airtight. When he enters the world of *Tokyo Ghoul*, he joins the CCG, culling ghouls and hunting down rule-breakers without flinching, even against S-class monsters. You’ll never guess how he’ll turn the tables next, and you’ll never worry about filler. The reason to follow this story is simple: relentless thrills, a protagonist who’s genuinely ruthless, combat that feels raw and real, and every victory earned through brains and blade—not handed out by a system.