Shusendo Seijo wa Reitetsu Ryoushu no Itsuwari no Konyakusha ni Narimashita

https://www.cmoa.jp/title/334107/

Yufi, a saint of commoner origin, is constantly exploited by her lord and forced to work without pay. She makes a living by producing her own holy water, but the new lord, Clive, who has come from the central government, accuses her of squandering the territory's money and throws her in prison. Despite Yufi's protests of innocence, the cold-hearted lord Clive...!?