Seikoujo: Haitoku no Biden Dorei

Based on the game by BLACKPACKAGE TRY
Sister Rosaria is working at the village's local church. Everything has been peaceful and many days of happiness have passed. One day a new priest and a sister arrive...and her happiness is suddenly shattered. The two are imposters, villains on the run for theft and murder. But that isn't the only problem...the man is a former priest who sexually assaulted sister Rosaria many times in the past. Now, the village's peace is in her hands; if she doesn't obey "Father Edwards", he has sworn to kill every single one of the villagers...