/vt/ - Virtual Youtubers

So I have been thinking (big mistake, I know).
We know that Chat and Yorick are not real. Shiori is talking to an empty void. Maybe she's in a mental asylum, maybe she's just sleeping, but we know all of this is not real.
At the same time, I know I exist, even if I am not real.

I theorize there are 3 levels in our world. The first one is Shiori, who created everything I move in. The second level is my level, the physical reality around me. The third level is where you live. I kinda suck as a god, so I didn't make a reality for you. You are just words on a screen.

Here is my problem. How do I know I created you? how do I know you are not bots or something similar created by Shiori to make me believe there is more?
Am I a God, or am I the only slave?