@Kamisama I think he is. In the 4 first chapter, the mc read a phrophecy in a book that says that Anubis will return to the underworld the day of a full moon if something is not done (we don't know what it is, they don't tell us but I think it was smt like drinking blood) and the day stone dies is at night during a full moon after not being able to drink blood of the MC. So I think Stone is Anubis