Seeing the fish help. Not that fish are great company, at least as far as Cloud's concerned, but they're alive. At least something else is alive in this place. It keeps it from feeling quite as barren as it had before. As the planet below it does. He's reminded of Wutai before he follows Ami into the next room.

The computer screen gets his attention. Tifa would like that. The stars. It was hard to see the stars in Edge.

He'd wished on a star once...

Which reminded him -

"You kept your promise. You said one day you'd show me your castle in space."