Amazing to see actual dokusan in Japan, normally a very intimate and private experience. It was very kind of the Roshi to let that happen, for the benefit of curious Westerners.
I will share my experience with you guys. I meditated 3 times a day for about an hour each session for a year then one day, I sat too long that my perception of being in a body which is breathing constantly dissolved. So at that moment, there was no body, no body which is breathing or thinking. Then at that exact second light hits my third eye, and there was nothing, I mean NO THING, like as a material existence, as a thing... so there was nothing but only "one thing"... some people call it GOD, some call it universal energy or divine power... but it was that thing only as a whole existence ... only thing that was exist in that millisecond was "that".... so when we say " we are ONE" that oneness comes from that one Thing... which is nothing and also everything... so you, me, others whoever reaches that state of being will feel the same thing which proves that there is nothing but ONE. I AM "THAT" I AM❤🙏🏼