Footwear
A flag loiters in a black hole. This flag marks (in the black hole) where you left your footwear.
If you look into the black hole, you can see your footwear right there, marked with the flag.
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You grab your footwear from the black hole. In your footwear (thanks to the shelter they provided), some reeds (り) have grown in!
It's amazing that these cute little reeds could grow in your footwear in the middle of a black hole. As a great philosopher once said, life finds a way.