He calls himself a mere medicine seller. Uninteresting, frankly. A wandering medicine seller who kills mononoke. The Medicine Seller always proceeds in the same manner, using his knowledge of the supernatural to fend off the mononoke until he can learn the spirit's Form, Truth, and Regret. Only then can he unsheathe his sword and exorcise the demon. reserved, calm and cool-headed in dire situations, observant and analytic, careful to scrutinize every detail of a larger scenario.