I think we don't need to wait for a Sex scenes in Citrus+ because Mei and Yuzu will probably have they first time at the Wedding night and this would be after citrus+ (now I destroy all hopes sry) ;D
There is really no reason for Aya to have no feelings for Sora. It's so obvious that they love each other. Even the friends ship them hard. So the drama feels a little bit unreal
I really was shipping them. But for me this game was not so good. Story confusing and gets boring and most of the characters are so stereotyped. But you can ship Rita and Estelle really good!