Two pale middle-aged pre-teens back to back with violet eyes

Two pale middle-aged pre-teens back to back with violet eyes, with the one on the left wearing dark alchemist clothes and the left arm with a steampunk technology prosthesis, holding a dagger with baphomet symbol, short black hair with a cut on the face, and the one on the right in white nun's clothes holding a rosary with closed eyes and long white hair with a church in flames behind , the night