Talk:Caster/@comment-34114968-20180107182528/@comment-28209103-20180123044551

EMIYA is counter guardian, he's different from regular Heroic spirit because he's agent of the world.

for example if there's threat to the world somewhere when Shirou is still alive he'll still be summoned to clean the mess.

Similarly Artoria made contract with the world while on the verge of dying, she's techincally are still alive during FSN because until she get the grail her contract will keep her alive.

unlike hero whose soul are registered once they die, the counter guardian are registered as guardian once they made the contract.