Hestia grew up in a later world of the G Branch; one dedicated to farming. They helped out with the animals and the machinery until they were called up for the GU4 mercenary regime. They trained on GU6 and GU5, then went to GU4 for two years to train for the selection. They weren't selected either of those years, and afterwards they ran away to another world, where they took up a hobby of detective. Soon, they gained a reputation and had detective work often.

They met their partner, a valet parking attendant named Mike, in a parking lot beneath a highend restaurant. At first they were just annoyed by him being in the way, but after working together on a few cases they ended up getting together. They've been together five years now, in which time Mike was possessed by a demon named Trevor - who sometimes still visits - and Hestia decided it was finally time to transition after many years of feeling uncomfortable being female.

On weekends they took up being a butler in said highend restaurant, initially for a case. They ended up liking it and staying.