It's like interest in the game has just plummeted off a cliff
I dont think there was big interest to begin with, we are still sitting at just 1 review and we are what, ~4 updates (months) in already? Original game is done, ending(s) are there so people moved on. Making this as a separate (standalone) What IF story was a mistake imo and a confusing name didn't help since we already got Aya routes and endings in original game and seen Aya getting some action. People would been more interested/hyped if HC "saved" Aya for this game instead.
Also bonus scenes kinda ruining corruption feels - in main story Aya didnt even touched Luka's cock yet, while in bonus scenes she's already doing anal.
Personally Im still looking forward for completion of this game as Im interested in seeing corrupted and broken Aya and all those amazing stealth sex around oblivious protag, also hoping for more yuri NTR, would be fun seeing Laura finally dominating and humiliating Aya.
Maybe people will get more invested when actual "fun" part will start with a sizable amount of scenes to enjoy, instead piecemeal updates we are getting now, but at this slow pace it will probably be near end of this year or later. I just hope HC wont cut this project short with half assed ending and only like 1\5 of planned content implemented.