Read manga: Sasensareta Guild Shokuin Ga Henkyou De Jimichi Ni Katsuyaku Suru Hanashi

manga
Summary:

They say the countryside is understaffed. But there are dependable colleagues and wonderful hot springs! Saz, an adventurers' guild employee, was left to the frontier by Hinnar, who has connections to the minister. He returns to active duty as an adventurer on the frontier, and is busy there as both guild employee and adventurer, enjoying the hot springs and opening up new possibilities.