What if the Maker... the one who created Gensoukyou, entrusted its management to some of his agents. I will call it so for the sake of convenience.You're talking about Reimu?I'm talking about the position of "The Hakurei's Shrine Maiden" as a whole.By reincarnating to a new human once every hundred years or so, she can keep doing her works unhurriedly.It is the stone."The World's Existence"...What if every one of those agents has the power and authority to exist outside all the law of physics.Deep underground The Hakurei Shrine, there lies a stone which has the same worth as Gensoukyou itself.