It is exactly as large as the hole he made into Sin.

It is, in fact, the hole he made into Sin. Or its representation in this weird place.

He thinks, at the risk of getting himself trapped in here for a while, that he will leave this hole.

He will, however, try to create something to place around the weird ball, and to place through it, in case this means it won't disappear. Something red, and green, and why not chartreuse, let's make it hopefully searingly bright and also glow-in-the-dark in places so he won't lose it if all the lights go out.

Can he attach stuff to the ball? He really hopes he can.

It's... not a ball. It's a hole. He cannot attach things to a lack of a thing.

(The facts that the hole is emitting light and that he can go through it no matter which direction he's coming from are immaterial.)

He can poke something through it and presumably get back to where he was going through Sin, right? So he can spend time digging another route through and hopefully get another hole in midair somewhere else nearby and then thread something through it.

Or does this not work for some reason?

It is not super easy to do. Sin is thick and pretty durable.

But it works. Except the inside is much larger than the outside, and so is the distance between the holes' respective glowing balls of light.

Can he see the other glowing ball? Because so long as it's not literal miles away he can do a really huge hoop between it and then conveniently he can make two visible random things in midair.

If it's literal miles then he might have a problem.

It... might be about one literal mile? Bit more maybe?

… Can he dig a hole closer? He will be very careful and try not to collapse his two current holes together.

Yes he can.

Presumably it is not 'a few feet' in terms of how close it is, is it?

He's just gonna attach the thing through Sin's flesh on the other side of the first hole. That sounds easier.

Not 'a few feet,' no. Attaching something hook-like to Sin's skin works, though.

Wonderful. Then he gets the ugly bright fluorescent tapestry thing or whatever and attaches it all together and he has a nice little bright colorful hole in the sky.

Nothing conveniently interesting has appeared while he's been doing this, has it?

It has probably been a few hours, at this point, but no, actually, the sky is still sky-like with lots of pretty pyreflies and nothing at all seems to be going on there.

Do the pyreflies do much if he goes to touch them?

They react to his presence by twirling around his hand a bit and glowing pretty rainbow colours before moving on.

He looks around himself at the distance he'd have to traverse to cover this whole space – that is, he cannot see walls and walls don't seem to be around for where Sin's edge is – and decides it is ridiculous.

He'll fly upwards a bit, keeping track of where he came in, and try looking for– well, anything that is not clouds or pyreflies or produced by him.

The clouds extend quite a-ways in all directions.

… He might be better off trying to go back and report this information rather than getting lost for potentially a century or something stupid like that.

The cloud beneath him, though, being all carpety and whatever. He's gonna check that first, move back over to his original spot with the glowing 'ball' of 'light', then go downwards from there through and into the cloud.

Cloud cloud cloud cloud—

—water! With mist rolling around it and various symbols (reminiscent of those he's seen in Yevonite temples) glowing on its surface.

And, in the distance: something that looks like the ruins of a temple.

– Is the cloud magical, by any chance? How about the water?

They're magical, yep.

Any convenient landmarks nearby?

Other than the ruins? Not really.

So he's just going to make a balloon here. From the air. Very red. Have it a good density so it can probably float for a while. Then one over there. And a third over here.

The ruins aren't too far but he wants to know what direction he should go in. This solution should be better than losing track of here totally. Probably.

Then he sets off for the temple.

...distance is weird. The temple gets closer, but not as fast as it by rights ought to. There is a set of stairs up into it, and it's strangely difficult to understand how many steps it has.