Mercenary: My Sword Can Evolve Infinitely

[Western Fantasy + Mercenary + Growth + Blacksmithing] Travel to the world of mercenaries and start with an iron-breaking sword. Others thought I was a noob. Only I know that I have a forging system. Bite! Complete the mission: Kill the Snow Wolf King and be rewarded with evolution points + 100! [Ding! The Thousand Hammer Sword evolves into the Sword of First Awakening! Unlocked abilities: sharpness improvement! [Ding! Complete the mission: Protect your companions, and you will be rewarded with the forging formula: Hundred Steel Refining! From a small blacksmith in Ironforge Town to a famous S-class mercenary in the mainland. From a piece of rusty iron to the legendary supreme holy sword. Someone asked me: How come you, a mercenary, are so good at forging? Me: No way, if you want the sword to evolve, you have to make the materials yourself. Everyone:? ? ? You call this "beating materials"? Those you fought are all magic weapons!