I like it a lot
Not much to say other than that, if I had one nitpickit would be that the controls aren't very intuitive? Like breathing in slowly/gulping air and slowly blowing/blowing hard don't feel like natural extensions of each other, gameplay-wise, so maybe it would have been better to have you spamming the button for the intense versions?
It was mostly a problem because at first I couldn't remember what the controls for those were and it feels like the kind of thing I should be able to deduce.
But that's just a nitpick, very cute game otherwise!