U-Can: Penji Training DS

"U-Can: Penji Training DS" is a Japanese Nintendo DS game released in 2008 by SEGA that helps players improve their writing and drawing skills using the stylus. The "DS" refers to the Nintendo DS platform, and the "DS japan" part of your query indicates it is a Japan-region game that requires a Japanese Nintendo DS system or a DS that is compatible with the region (NTSC-J). It is an educational game designed for learning Japanese handwriting and comes with a touch pen.