This comes from something I read in another fanfiction (sorry don't remember which), about whether certain people are real or not, depending upon your own interpretation. Well the next two chapters are my interpretation...
Disclaimer: KH1 & 2 are not mine, I'm an archaeologist for god's sake!
Real: being an actual thing; having objective existence; not imaginary
"Aerith, where's Tifa?"
"Tifa?"
"Yeah, you know, dark hair, dark eyes, mean punch."
"Sora… Tifa… She never made it out of Radiant Garden when the Heartless first attacked, years ago."
"That's impossible! I saw her here when we all fought the Heartless together!"
"… The last time I saw Tifa, she was leaving here with Cloud. 'I'll see you soon!' she said… Then… Cloud turned up alone."
"…Maybe she got lost?"
"Tifa was Cloud's childhood friend. He'd never have left her behind willingly."
"But… I saw her. She was here, she helped Cloud fight Sephiroth!"
"Well… No one else saw her right? Just you and Cloud?"
"And Donald and Goofy."
"I think… Sephiroth was Cloud's greatest enemy in life, and now he's the form that Cloud's darkness takes. Maybe… Tifa, Cloud's oldest friend, is the form that his light takes."
"But… she seemed so real."
"She was real once."
