Oumi Oujin

Dikku, a sage who has traveled as a member of the hero's party to defeat the Demon King. However, one day he is falsely accused of being a harasser by his companions and is exiled from the party. In despair, Dikku passes on his sage powers to his niece Emerin. Stripped of his power and status, he starts over from zero, but the profession he randomly acquires afterward is one he's never even heard of: a Tinpo Master...!?