>>88723350Keep in mind this is all speculation
They have a number of slots for merch (think 3?), so most girls do birthday, anniversary and something else
Fauna: birthday, anniversary, outfit shirt
Mumei: same as above
Kiara: birthday, anniversary, frogiwawa
Now for merch, there's standardized and custom and the more money they invest, the bigger the cut they get
Then there's merch that Cover does, Enreco stuff, Eurobeat
Anyway, here's an img from one of FWMC's mornings