...

 Cloud Strife: [Zack lies at the edge of a cliff, dying; various pieces of 'enemies' armor & weapons scattered across the ground; Cloud, still weak from "Mako addiction", crawls toward Zack; when he finally reaches Zack's side] Z-Zack.
Zack Fair: [grunts in pain; face relaxes, he looks at Cloud; with a smile] For the... both of us.
Cloud Strife: [confused] Both... of us?
Zack Fair: That's right... you're gonna...
Cloud Strife: [as if to prompt him] You're gonna...
Zack Fair: [Zack reaches out, grabs Cloud behind the head; as he pulls Cloud's head down to rest on his chest] Live.
[holds his head in comradery/friendship]
Zack Fair: You'll be... my living legacy.
[hand drops to his side; Cloud sits up again, the side of his face now covered with Zack's blood; Cloud just looks at Zack silently; Zack looks over at Buster; drags it towards Cloud]
Zack Fair: My honor... my dreams...
[holds Buster out towards Cloud]
Zack Fair: they're yours now.
Cloud Strife: [reaches for the sword with one hand; eventually grabs with the other also; Zack briefly touches Cloud's hand before he pulls the sword towards himself; silent a few moments] I'm... your living... legacy.
[Zack closes his eyes, smiles and dies; Cloud, distraught, looks up at the sky, screams his grief]

Zack Fair: [hears his voice] Embrace your dreams.
[brief pause]
Zack Fair: If you want to be a hero, you need to have dreams.
Cloud Strife: Thank you... I won't forget.
[stands up; bows his head in sadness; once he recovers]
Cloud Strife: Good night
[turns to leave, stops; almost whispered]
Cloud Strife: Zack.

...

...

Zack Fair: That girl, she said the sky... frightened her.
[pause]
Zack Fair: That looks so... liberating.
[opens his eyes]
Zack Fair: Those wings... I want them too.
[pause]
Zack Fair: It feels... good.
[pause, see Cloud walking though the 'plains']
Zack Fair: If you see Aerith, say hi for me. Hey, would you say... I became a hero?