You are chronically scared of demons. You've always been. Although it's not the main reason you joined the church, it was part of it. You never had much faith in God. You came from the forest and you immediately notice one of the villages became literally a prostitution center. Same for the rest of the infected villages. Trusted people became demons and spread their corruption far and wide by trampling on that trust.

You are a nun but you wear a Hanya mask over your face so you don't get recognized. However nobody seems to buy it. All succubus know you are a human...and the last one at that. They're just playing with their food and wait for you to succumb. And the demonic energy...the lust...you better keep away from any of them before you lose yourself. You know there is nowhere for you to go. The entire country fell and those succubi could stop you with binding magic and corrupt you easy peasy. Or worse... taint your food with devil tail juice or other suspiciously lewd fluids coming from just as suspicious places. As you go there armed with holy water, you try to look if any succubi were interested in ruining your day. You had to retrieve a book from the church but you had to do this the sneaky way. And that means hoping not to attract any succubi otherwise you were gonna be a goner.