User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-31726296-20170716021510/@comment-28209103-20170716200903

well it's totally Ruby, and the magecraft are totally projection Magecraft given it's effect..

uh let's see.. I'm sure Rin is the other users of Ruby,, and doujin conerning fate there's that one game called Battle Moon Wars I played long ago..

Magical Amber?? doesn't explain the projection magecraft and resolute devotion tho..