This right here...

The illusion:

o n e ?

i mean 2 ;-;

I don't really care about who's on top or not, I'm just concerned for the person that's not on the bridge but mysteriously hanging there.

Yeah

1 is on top.

Yes

That is amazing

:3

Actually I think it is number 2 because I can kinda see through number 1, just a little bit

Ah

It’s easy, on the vertical axis, 2 is above the 1. However, it could be upside down and the 1 would be above the backwards 5.