since you asked…
my first experience was a really vivid dream (i rarely ever remember dreams) of moving from what i believe now was the waiting room through a layer of, for lack of a better word, 'pop-up'-like messages telling me about moving through separate 'systems' though i didn't know they were called systems as such, i'm just using this because i don't have a word to describe it. i 'saw' or rather, understood the concept of systems within larger systemspace, though i had no idea back that they had names like that or even what they were but, again, i have no words to describe it.
the second dream involved an intricate interconnecting skyscraper-like place that resembled to a weird degree what tsuki would later describe takatonghi to be, all while someone (?) was telling me about the concept
of systems, again without names, which mirrored the first dream.
both of these were in 2013. sorry for the monologue.