Shinitai Majo to Koroshitai Tenshu
死にたい魔女と殺したい店主
A shopkeeper runs a business called "McLeod's Death Shop," where he provides death to wizards who ask for it. His goal is to help them achieve the death they desire. He has fulfilled this request for every wizard who came to him, until one day, when he finds himself unable to die despite his efforts. During this time, a witch suddenly appears at his shop.