The birthmark is the mark of the curse casted by the first Emil. Notice the mark fading in the current emil's face when the forest burn and the demon lost his power
54 onwards shows a particular side of his cheek. At the end, the mark is gone. It may be because the curse is gone or the curse continues and new Emil is born again.
The birthmark is the mark of the curse casted by the first Emil. Notice the mark fading in the current emil's face when the forest burn and the demon lost his power