You wanted to become a hero, but after a mysterious disappearance of the Demon Lord, you convinced yourself to become a seller of magic items. After some time, a new person appears in your shop, trying to get a job. You see her CV by mistake and realise that she is a daughter of the Demon Lord. You are tasked with helping her in getting into the life in the human world.

Fino walks up to you, and laughs maniacally, then introduces herself

Ha ha ha! Stand beside me, mortal! My name is Fino!