シスタースレイブ ～修道少女奴○調教～

You are a skilled trainer.
Your job this time is to corrupt a nun who has offered herself to save the church from enormous debt into a lustful slut.

This is a "touch simulation" in which you train the kind, noble, and strong-willed nun, "Marea," into a lustful prostitute slave.

[Machine Translation from Dlsite]