Is this game possibly going to Steam or like GOG in the future?
That is the current plan yes. Preferably both but we will see. I have already submitted the request to GOG but so far didn't get any response. From what I'm hearing, they only tend to take VN's that are already either more established with a big following or are near completion or complete. Steam recently changed their policies regarding early access games and adult games in particular to where they have to have all kinks already present and also be near completion and they now also restrict a lot what kind of VN's are allowed. Bottom line, probably not until the game is almost finished or finished so it could be a while. That said, I am in active talks with both platforms so it could be either approved sooner at some point or declined altogether. We will see.