The deities of the various Posa worlds each hold their own beliefs about what exists beyond their own world.
It's hard to say which side's understanding is correct.
The only certainty is that beyond each Posa world, there must be something.
That thing could be the nest nurturing worlds, a cradle of creation; it might be the supreme deities, the ultimate will; or perhaps it's merely an illusion bound to awaken...
And at that time, Kaguyahime's understanding of the "outside" was mainly interpreted as "Shinshusado," as understood in native Izumo.
Kaguyahime: "But, Tsukuyomi-sama, what does the projection of Shinshusado refer to?"
Although aware of matters related to "Shinshusado," Kaguyahime had never heard of any "projection" before.
And in Kaguyahime's understanding, Shinshusado is the creator of a myriad of worlds, represented by the supreme existences named "Takamimusubi-no-Kami" and "Kamimusubi-no-Kami."
