Unknown to him , he is half-aswang , the son of Samuel Alejandro , the Haring Aswang ( King Aswang ) and also the prophesied Anak ng Dilim ( Child of Darkness ) .
Juan does not know that he is a half-aswang , the son of the Haring Aswang ( King of the Aswangs ) and the Anak ng Dilim ( Child of Darkness ) .