Castiel left the Elemental Nations on a bad note and Shin Makoku on an even worse one. So now he is traveling alone and ended up in a new world. How will Hogwarts handle a Mazoku?
A little boy and his dog are left alone for the first time...
It was once said that there were 10 holy entities who protected the Elemental Nations. What would people do if they found out the 10 had taken human form and were roaming among them?