not for fear of spoiling the story, but because the truth of the final plot twist is so ridiculous it would sound like a joke.
bebpo! spoil me the game! now! i want to know how bad it is!
I don't remember the details because the plot was all kind of a nonsense blur but I think it was
spoiler (click to show/hide)
you're not playing as Aya, you're actually playing as Aya's sister who is dived into her body meanwhile the real Aya from PE1/2 died because she dove into her sisters body who had to die for some reason I forgot.
There's also a bunch of time travel loop nonsense. Because her sister has ESP powers which include time traveling.
I dunno, the plot is nonsense made to piss off long-time PE fans by killing off Aya and telling you you're not even playing as her. I never played PE1/2 so I didn't care at all.
Still, the atmosphere of the game is top-notch. It's one of the darkest most disturbing worldviews ever made.