XXXHOLiC (2005– )
characters are from the series
The dog mentions he runs a shop that grants wishes, similar to Yuko's shop in Holic. XXXHOLic is also written by CLAMP.
The character "Watanuki Kimihiro" from the CLAMP title "xxxHolic" appears in the movie as an owner of a shop that grants any wish (a reference to Ichihara Yuuko's shop in xxxHolic).