Bite-Sized Surprise (Pixiv Fanbox)

Maria Campbell thought she'd surprise her dear friend Katarina by shrinking down onto some of her sweet treats and popping out when she least expects it. However she neglected to consider how quickly Katarina scarfs down her sweets without even looking...

One of the winners of this month's poll!

I'm considering a 360 version of this, but not sure if it will pan out just yet