Why for?

Well, if one does want to stay with me, then I'll need to give it a doll body and turn it into a Soulstone

But what if it wants to remain as a spirit, not be trapped inside a stone and then doll?

It won't be trapped. The Soulstone gives a doll life, so, after a brief period of it getting used to a physical body, it could do whatever it wants

I think I would want to remain as a ghost, not get a doll with it's soft body and lack of fingers and stuff. XD

What do you mean?? Those things form when the doll comes alive

Then that's basically not a doll... XD Doll made from fabrics is exactly that... doll made from fabrics. XD A soul trapped in it cannot form it to be more solid than it is. Unless it's magical doll.
And I still would like my ghostly self more. XD At least no one can throw me into washing machine.

Why would anyone want to throw a living doll into a washer?? Even when she could tell them to stop. Besides, magically-created dolls become evil

But if they didn't know it was magical doll? XD I don't think it can be allowed to be popular fact, or else they or scientists will tear the doll up and try to figure what makes it magical and stuff. Or if they were evil people, they could do it, too. XD

Yea... I definitely will stick to this form, haha.

It hasn't happened yet. Living dolls aren't that rare in Neohanjukio

Good for them then. XD Though, form on side, we aren't there right now, but on another planet. ;D
You tell me after the event how things went with the souls, okay?

Will do. Who knows, maybe you'll see me with a new friend :p

The souls I found seem rather content to go rest on the moon.

There is a chance they could change their minds

Doubtful. They seem to enjoy curling up in my hair to nap like birds in a nest.

Funny. Most of the ones I find prefer to stay under my clothes. They're not doing anything weird, are they.....?