When I Tried Strengthening “Rusted Sword,” It Evolved Into an Overpowered Magic Sword (Official)

Rust had always dreamed of becoming a great adventurer, just like his childhood friend Ruby. In their world, every child received a sacred weapon from the gods at the age of twelve—a symbol of their destiny. While Ruby was blessed with an A-ranked weapon, Rust was given nothing but a worn-out, F-ranked rusty blade. Many laughed at him, saying he would never amount to anything. Even when Ruby was whisked away by a prestigious guild, Rust refused to surrender to despair.

Day after day, he trained relentlessly, battling the weakest monsters he could find. Each victory, no matter how small, strengthened his resolve—and his sword. Three long years passed, filled with countless struggles and quiet determination. Then, one fateful day, his perseverance paid off. The moment his rusty sword reached level 10, something extraordinary happened. A hidden power awakened within it, transforming the worthless blade into an unstoppable magical weapon.

This is the tale of an underestimated boy who defied the odds, proving that true strength isn’t always measured by rank or reputation. With his newfound power, Rust embarks on a journey to carve his own legend, one strike at a time.