Anyone know anything about this Ho-Oh sticker on this GameBoy Color?

[PLAFiles]

EDIT 23.5hrs later: Lame. Thought this community of any would've hopped on the research train for something cool like this.

Anyway, I found the source and there's actually as Lugia sticker too. It is from the "Pokemon Gold and Silver Strongest Scenario Clear Adventure Guidebook" that was, obviously, only released in Japan. Added some more photos, besides the GameBoy showing the Ho-Oh sticker that I initially included.

Original Post below:

Cannot find anything online about it. Attached a photo of the sticker. I have been finding really cool stuff regarding GameBoy's in general from back in the day but I cannot seem to find much online about any of it. Any help appreciated.

 

 

Edited December 30, 2024 by PLAFiles
Added explanation and more photos.