Hiya, I wonder if you are able to locate or have the Boktai DS wallpaper, that was released back in 2006 November. It was a countdown calendar for Boktai DS's release in Japan, and it was hosted on Konami's blog which doesn't exist any more. :(
I don’t think I do, the only wallpapers I had of it back then were the crossover ones with Megaman Starforce. Maybe one of my followers could help you with that.