Sadly, things get a little twisted (as in tangled up not sinister) and it be a stalemate. Let's hope not. Also for City of Dis.
Disclaimer: SquareEnix owns the recognisable bits.
Tifa.
Reality: the state or quality of being real; resemblance to what is real.
"I don't get it. How come Cloud can see me and talk to me, even though he thinks I'm dead?"
"Well, I don't think he's actually seeing you at all."
"…come again?"
"He said you were his light, right?"
"Well he said he lost me, and he lost his light."
"So he thinks you're his light, that you're not you, just that his light looks like you."
"…o--kay…?"
"…put it this way. Squall thinks I'm dead, but he still talks to me. Only, because he believes I'm dead, he also believes he can't look at me."
"Why not?"
"Because …if he was to look, then he would know for sure that I was dead. "
"So… what you're saying is…?"
"Reality is what you make it. Squall thinks he can't look at me, so he can't. Cloud thinks you're simply his light, so that's what you are."
"But then… how will we ever get to go home?"
"We have to wait… wait for them to believe that we might be real."