Ok ok ok ok hear me out
Soda cake
Is worth like 1 fat point but massively increases your GP cause. It's fizzy
Maybe the boss equivalent has an attack where she shoots a giant gas bubble, like how the player character can do when they have Max gp
Maybe she hae an attack where she slams into you but if you push her away with 5 parries in a row while she's falling, that would count as "shaking her up", which if they have low enough health it inflates her and you can choose to make her pop or float like the sponge cake
Also you really gotta balance pump punk. It takes like a full second to cancel the inflating of some cakes and that's not time I have when a bullet is about to hit me and I need to dodge Right Now and also the bullet was not shooting at me before I had the air hose out so I couldn't have predicted ot