Possibly the Greatest Alchemist of All Time, Vol 1

Takumi Iruma, although not a hero, got caught up in a hero summoning spell and was reborn in another world. As an apology for getting him involved, a goddess of this world agreed to grant him any skill he wanted! He was hoping to use a humble crafting skill to live a peaceful and modest life in this other world, without having to battle anyone... but the Alchemy skill he was granted turned out to be the most powerful skill with the ability to create anything from a holy sword to a flying sh...