Alright I played it a second time, I played all there is available for now so now I can give an actual "review".
This time I did use the callendar and it was a lot easier than the first time, altogether the game is great, story, visuals, I like that the sex scenes have a bit of animation and not just 2 repeating frames, I also enjoy the fact that you give us some level of interaction at those scenes.
Since my only "real problem" with it was the hints and they were always there and you're obviously working on the bugs, the only thing I can think of that can get "boring" for some people is having to grind the money, since you can get 40-50 every time you work it can get a little grindy for some but in all my years I've had a lot worse times grinding porn games so for me at least it's nothing.
All in all I like it a lot, everything's good, you're doing a great job and this is one of those games that I actually want to see finished.