Look At
When you see a spirit you have to look at it. Look at it directly, because if you look away then it could disappear. You just have to keep on looking at it deliberately.
Look at the spirit. Look at its shape and into its eyes. Just don't look away.
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You look at the spirit for as long as you can, until you hear a sheep (し) sound. You look away for a second, see the sheep look at you, and when you look back the spirit is gone. Damn!
Now you have to look at this sheep. Maybe the sheep was projecting the spirit... or maybe it's just a sheep. You'll have to look at it a bit longer to know for sure.