When I visited there on Dec/12, the page response was very slow probably because a lot of access. Now, you can see the page easily.
From the page, they say you can get an illustration for a cell-phone wallpaper or a postcard. It is a portrait of the two, Yōko(陽子) and Rakushun(楽俊), by Yamada Akihiro and available for a limited time until 2012/12/25 @20:00. Don’t miss it.