If you decide to make a wish- and that is still a pretty big 'if', as you do not seem intent on making one at the moment- it will be needed. I cannot enter your world, not without drawing unwanted attention to myself. So if you want a wish to be granted, you would need to bring the materials here.

[More vagueness on his part. Because while he did see a vision of the future, and of Shura's wish, it is just one of many possible futures. She could still refuse the wish, or ask for something else entirely.

Watanuki has a feeling that won't happen, though. He doesn't invoke 'fate' as much as Yuuko did when she was around, but even he can see the signs of fate intervening. And their meeting twice now? Definitely fate. Though he's still not sure what this fate will bring for them, should Shura not lose her spine and run away from it all.]

The brooch would be payment for your wish, of course. Unfortunately, if you do decide to make a wish, I will have to ask for payment upfront from now on.