carrot:
I went to Osaka in January this year for traveling, and surprisingly found this period-limited Lum's choco shop in MIO department store!
They sold chocolates which are packed with Urusei Yatsura's character image, but the packages are all made by paper... If they were packed by metal, I would buy some.
veehive:
AUGGH! If only I'd known! I was there (in Japan, at least) April 6th through June 6th. Don't know if the shop was still there then, but if I'd known (and, if it was), I would have tried to visit!