User blog comment:Hitsuji Mamoru/Monthly All-Out Speculation Topics Schedule Blog/@comment-27971189-20170113100154/@comment-28209103-20170113101135

so there's counter guardian in FGO? as far as I know only EMIYA assassin appears as Counter Guardian, meanwhile there's nothing that stopping Lev Flauros that creates Chaldea, well in HF tho only EMIYA got re-wired as Counter Guardian and he died shortly after, the rest are done by agent of Alaya (Shirou, Rin)

hence my question about the whole system of Counter Guardian, in Araya case it's noted that the will of the world could even bypass his perfect barrier, which means the world should instinctively knows the threat to itself. of course there's also the beast of Alaya which is another concept of guardian.. hence my proposal to set thing straight.