Operation confirmed Game Boy Pokémon Pikachu (box and manual are in poor condition)

This is a Game Boy software, Pokémon Pikachu. Lot 20C.
The box and instruction manual are included, but neither is in good condition. The instruction manual has creases but no missing pages, so there are no issues with reading the content.
Save data has been erased.

Initial operation confirmed on April 2026 with a Game Boy Color unit. (Photo 12)
We confirmed that it can save data at the time of listing, but since it is not a new battery, we cannot guarantee that it will be possible to save data at the time of purchase.
Please consider purchasing only if you plan to replace the battery.
*Game Boy unit is not included.

Ships via anonymous shipping with either YuYu Mercari便 or RakuRaku Mercari便.