The game is probably in English, as a Chinese edition was released later. In addition to the blue manual shown below, it may also have come with a second manual, identical to the manual included with the Chinese edition. It came with various stickers on the front, on the spine, and inside the case.
1. Front
2. Back
3. Disc
4. Manual
5. Stickers
Thanks to Ruten members bluengckk (images 1-3), fortunate2216 (images (4, 5c), and alice888_tw (image 5ab).