Two pale girls from the middle ages, back to back, the left with violet eye

Two pale girls from the middle ages, back to back, the left with violet eye, short black hair, black alchemist robes with technology, cut on the face, the one on the left with a steampunk prosthetic left arm, with pentagram and dagger, with a look of suffering, right with white nun clothes, long white hair, eyes closed holding a rosary, with a bonfire execution in the background