the hollow soul

Ramiels father goes missing on the search to find him he meets a demon named dagon that joins him on his journey as they are figuring out where his dad is he slowly starts turning into a demon when they sneak into where might be where his father is they cross paths with a green dragon when they sneak past the dragon they find his father.He sees drawing on the cave walls telling how his father's youngest child will be turned into a demon bc his father stole a villages bell their most prized possession to save his family and the only way to break the curse is to kill the dragon the guard of that village