Toaru Chiisana Mura no Cheat na Kajiya-san

Melia, a former office worker, was reborn in another world by chance. She was always working in her previous life, so now she wants to live leisurely in her new world. God grants her wish by making her younger and giving her the blacksmithing skills she had always longed for. Melia was excited to be able to blacksmith every day and enjoy her new life. But it turns out that in this new world, her blacksmithing skills are pretty special. It seems like her quiet days were not meant to be...

(Source: Alpha Manga)