Potion-danomi de Ikinobimasu! S01

Kazuro Nagase, one night on his way home from his office job, suddenly dies and finds himself in front of a white-robed man. The man introduces himself as God and apologizes for his mistake that led to Kazuro's untimely death, promising to make amends by reincarnating him in another world. The goddess of the next world, Celestine, rebuilds Kazuro's body and gives him all the privileges he wants: a body he had when he was 15, the ability to create potions with desired effects, and a box with unlimited storage space, among other things. However, Kazuro soon realizes that, contrary to what he was told, this new medieval world is not as magical as he thought, which makes the greedy nobles desperately seek his potions. Nevertheless, with the help of his knowledge from his previous life, he may be able to find a way to survive in this world using his potions.