Welcome to the world of NCC and finding out you get out of it what you put into it. If you stay loyal to a girl (or girls) they'll stay loyal to you and not get fucked by the likes of David. Like
Alfius says, there are only 7 days a week so in theory you can only keep 7 girls content - but some events prevent "visits" on all days so you have to go for mini-harems if you play that way.
The player doesn't have the option of seeing specific girls in a particular day (at least not consistently). The game is a visual novel and is heavily story driven. I've had several girls that went MIA and I lost them because there wasn't enough freedom to spend time with them. I am able to juggle several girls at once as long as I don't date their enemy also. Each girl seems to have someone they despise (which is fine).
My main two squeezes right now are Michelle and Ashley. I like Tatianna also but I haven't been able to make much progress with her (Kirsten also, she is a little minx but I don't want to go the cuck route). I have several "friends with benefits" relationships / fuck buddies.
I'll probably write a review once I finish this version which will be soon. Below is a few comments I'll probably make in my review.
The cast is too large. A large cast is good but it can be taken too far and feel that it happened with this game. I would cut 33% of the characters and have it be more focused on their lives with deeper stories and involvement. I honestly have trouble keeping track of everyone and matching faces with names throughout the game. I'll probably play through it again once new versions are released and it will be easier to keep track of everyone. It kind of feels like starting a new job with lots of employees (new people overload). This game really taxed my memory due to so many new names and faces. Sometimes the game would ask me what decision I'd like to make with a certain character and I honestly couldn't match the name with a face.
Another problem with such a large cast is that many of them are barely used. The player gets introduced to them and has one or two scenes/events with them and then they are largely forgotten. I would try to use existing characters instead of having so many "extras" in the game and not have so many "not so meaningful" contacts.
The author really needs to recruit some fans to go through all the dialog and clean up the English. The English in the game is below average. Most people can figure out what is trying to be said but it would be nice to not have to interpret so many poorly worded lines in the game.
One small complaint is with the sex scenes. The player seems to only be allowed to have one orgasm. Once that is finished, the scene ends. This doesn't reflect real life at all. My husband fucks me three to five times in a row with all of them ending in a cum dump. It is silly that the MC can only cum once per scene.
The story is good and engaging and overall a big success.
Overall, the game is well done.
UPDATE: I just finished the game and wrote an honest and detailed review about it.