Agree. The story is really amazing. What I really like is that every girl has their very own and very different personality. Each has a quite different reason to be around the MC. Each has their own goals an expectations and not every one is just falling head over heels for the MC, quite the contrary. The most fascinating characters for me are Sarah and of course Catherine. Both highly complex personalities with their own set of issues, insecurities and protective shells.
The story captures beautifully the decadence of royal and high society. But besides all of that the building of your own business is well portrayed and even though the daily routine of course is kinda repetetive, it never really felt that way. Every day was unique in some way.
To me Catherine's backstory and the accompanying music had the biggest impact. It was a surprising and heartwarming twist.
Before reading Cosy Cafe I declared to myself, that I would stop adding more AVNs on my monthly paypal cost, but I just couldn't resist. While I generally don't have any expectations or demands from the devs I support, I do think the story is worth continuing. I made the mistake of playing Eternum after Cosy Cafe -.- Now I have like 6 AVNs I have to support. But as long as I can manage, I won't stop. As a programmer and former game dev I know how much work goes into making games.