Ah okay! is it only the one glowing door you can currently unlock? (i only noticed about the nightclub on the final day so not sure if it might be a thing i have to start from day 1 to get more keys?)
Also sorry to be that person but do you have an idea on when you might bring out the futanari content?
The game is absolutely amazing though! I have to give praise where praise is due, the difficulty of the game seems pretty fair and it has a pretty fun gameplay loop, I did notice what I thought might be bugs but they could also be intentional and that is the meter when you go into scenes with certain characters takes WAY too long to build up