>>724608223
It's like every now and then you see people complaining about that one little trivial part in Bloodborne, like the door guy, asking for a password for passage. Once you actually got it and pass through the door you find behind the door is nothing but a long dead skeleton, how is that realistically possible? Well, you complete the game learning that Yharnam itself is a false memory, an instance of a dream, part of a nightmare, a mere simulacrum of the real thing. So the voice is a lingering glitch in the Matrix.
In real life physics, we now know that the 4th Dimension exists, the 4th dimension is spacetime. Three dimensions are spatial, and the fourth dimension is temporal. You could envision the 4th dimension as infinite 3rd dimension stacked over each other on all directions. This is actual science. But this also explains the metaphysics, occult/esoteric thinking. Like black magic, chaos magic, intentions, coincidences, and even psychoanalytic theory like Jungian's Synchronicity. Deja Vu. Quantum mechanics, observer effect, cat in the box experiment - Schrödinger's cat, quantum superposition.
There are infinite memories, universe, dimensions stacked over each other. So imagine the universe getting stagnant and these barriers between dimensions get weaker, that's how people are able to cross dimensions in DS universe. This is the time is convoluted thing. Summons, or seeing other players' phantom in their own mirrored worlds. Sekiro seeing his own fractured Remnants, like shadows of himself in the world. Even seeing Kuro's past phantom memories, because remember, Kuro did give his blood to Sekiro. It's part of the lore.