He only ever performs one trick: making the slips of paper with other people's worries and troubles written on them disappear.
But he fails at it every single time.
And when you open up the papers that come spilling out, what's on them isn't worries and troubles at all — it's his own care, his own love.
It's okay, it's okay.
Because it was never a vanishing trick. It was a transformation trick all along.
Hereby declaring him the best character in this movie.
(Seems like the uncle did pull off one vanishing act, though.)