Renkinjutsushi desu. Jichou wa Gomibako ni Sutetekimashita. I'm an Alchemist Who Doesn't Know How OP I Am

Synopsis

I am an S-ranked adventurer and for certain reasons am traveling with a certain alchemist. However, this alchemist is quite strange. In his spare time, he can make the highest grade potion called an elixir, and can complete a holy sword overnight. I want him to remember to be responsible. I want him to watch his health... stop drinking elixirs like they're energy drinks! This is the story of the weird alchemist who doesn't know restraint and the adventurer who tags along with him. (Source: Shousetsuka ni Narou, translated)