I was looking at the old chapters, and in one of them . . . I forget which one . . . Watanuki finds a toy version of Sakura's sealing staff, and Yuuko mentions that the Sakura and Syaoran from CCS live in her world, but she hasn't met them yet . . . I wonder if CCS's Sakura and Syaoran will ever make an appearance in xxxHOLiC??? Yuuko does mention Clow Reed a bit, and according to her they DO live in the same world . . . Maybe they'll run into each other on the street or something???