He's a magician who only performs one trick: making slips of paper with other people's worries and troubles disappear.
But time after time, the trick fails.
When he opens the paper that spills out, it holds not worries and troubles but his own care and love instead.
It's okay, it's okay.
Because in truth, he wasn't doing a vanishing trick. He was doing a transformation trick.
I rate him the best character in this movie.
(Looks like Uncle succeeded at the vanishing trick, though.)