User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-30314236-20170310191146/@comment-27971189-20170312155416

Now that the information added.

Don't tell me this the legit Assassin Artoria, not the fake one (MHX). LOL.

Oh wait, he is male, maybe he is Proto Arthur as Assassin.