The main reason I think someone from EN might leave this year is because this a big year of change for HoloEN, not only are they now a main part of HoloFest, rather than just being a guest appearance, but they also have their own concert going on, that I assumed goes well will likely become a yearly thing, not to mention Ina is currently in Japan recording and taking lessons, Bae also just went back to Japan for unknown reasons and Ame also mentioned having to go back soon, this is their life now, constant flying in and out of Japan will likely become commonplace for them, not to mention once they are done with whatever they have to for the En concert they soon enough will have to take another month to got to start preparing for Fest, the past two years HoloEn job has been mostly just sitting at home streaming, recording and working of paperwork but now constant work for live event are probably going to be the norm and I could see at least 1 girl deciding this is not what they signed up for and leaving.