Insert
You have fingers in the thousands and while looking up at the sun you decide you want to insert them in there.
Hold your thousand+ fingers up to the sun and imagine inserting them into the sun's super-hot ... s-sun lava. (That's what it is, right? Yeah, let's go with that.)
そう
さ
None
You insert one finger, it burns up immediately, and its soul (そう) comes flying out screaming for a moment before it disappears. Hmm. You insert another finger and as it burns up, another little soul comes out screeching, "WHY WOULD YOU INSERT ME IN THERE!" and is gone.
Since you have a thousand fingers too many, you decide to insert them all into the sun and watch as their souls pop out. You listen to the little souls scream at you.