Furyu released today a new anime x manga Nintendo 3DS theme in Japan the official Urusei Yatsura one. It is available in the Japan Nintendo eShop for 200 Yen (with tax.
On the bottom and the top screen wallpapers you can find Lum and it comes with sound effect and the short version of the official theme song of the anime as the BGM.
In the gallery you can find the sample picture!