What is Akane doing? (Pixiv Fanbox)

For those who wish to see the full image before it is released in the game, you can access it on the Discord channel #game-arts (available only for Master and Champion tiers) or through this link:

https://www.dropbox.com/s/p60w4ahdg748qza/akane.png?dl=0

I plan to do a little animation with this scene as well.