Before heading to the oncoming battle, the demon visits a shrine where she recievesa prayer from the local prietsess. Because she is a demon, like her entire race, when blessed or come across something divine/holy her body starts to burn with smoke/steam coming off her body. But unlike most demons mizuki has built up a tolerence to anything dovine/holy. Not immmune as it still hurts them and makes them uncomfortable, but pain something her people are accustomed to.

Art  ryuz
Kitsune & Mizuki  samuraidemon