When I Tried Strengthening 【Rusted Sword】, It Evolved Into An Overpowered Magic SwordWhen I Tried Strengthening a Rusty Sword, It Turned into an OP Magic Sword; 【さびついた剣】を試しに強化してみたら、とんでもない魔剣に化けました; "Sabitsuita Ken" wo Tameshi ni Kyoukashite Mitara, Tondemonai Maken ni Bakemashita; 【녹슨 검】을 시험 삼아 강화해보니, 터무니없는 마검으로 변했습니다; 我試著強化了"生銹的劍"，結果變成了沒有意義的魔劍; 我试着强化了“生铖的剑”，结果变成了没有意义的魔剑; Когда я попытался усилить [Ржавый меч], он превратился в нелепый волшебный меч

When I Tried Strengthening Rusted Sword It Evolved Into An Overpowered Magic Sword manga, "Sabitsuita Ken" wo Tameshi ni Kyoukashite Mitara, Tondemonai Maken ni Bakemashita, In this world, when you turn twelve, God gives you a special weapon called a sacred weapon. Rust, a boy living in a remote village, dreams of becoming an adventurer with his childhood friend Ruby. Ruby receives the highest rank, A, but Rust receives a battered, F-ranked rusty sword. Unlike his childhood friend who was recruited by a top-ranked party, Rust was told that his dream of becoming an adventurer would never come true, but he didn't give up and decided to fight with his rusty sword. He defeats weak monster little by little and steadily strengthens his rusty sword. Eventually, after three years, theRusty Sword finally reached weapon level 10. At that time, a skill awakened in the rusty sword, and it evolved into an overpowered magical sword. This is an adventure story of a boy who was always told he was the weakest.