Seihin Seijo-Chan Erokaruto Ni Datsu [oresam]

Description: 
Misuzaki Seito grew up in an orphanage in a rural town.
She values ​​faith and poverty, and is the kind of girl who is loved by the local residents and called “Saint-chan.”
She spends her days worrying about the management of the traditional religious organization that raised her, and, like any other girl of her age, about a boy she is interested in.
One day, she is confronted by an erotic cult with a sex-first mentality that has completely destroyed all sense of ethics.