Got to comment you have an interesting concept, but a few very critical things I think is very important to fix in the next version:
1) You need some sort of trigger to announce to players they have reached the end of the current version. I didn't even know I have reached the end of this version.
Wasted a lot of time grinding through the days to get enough money to buy a cell phone and information on Youko only to have nothing happen. I only found out this was the end after reading online.
So here's a public service for everyone playing, version 1.0 will end after you have unlocked all the scenes in Raven, Ryouko, Mika and Youko.
2) There are a lot of grammatical errors throughout. While I understand English ain't native to everyone, many of these errors can be picked up by a basic grammar / spelling corrector. Perhaps you can consider running the script through them.
3) There's something weird with the animation rendering in Ryouko's sex scene. Pussy is much whiter than the rest of her body and looks like a cut & paste job, might wanna correct that.
4) Try to provide an option for player to automatically use up all their remaining energy for strength when they choose sleep. It's pretty pointless to just keep clicking and watching MC do pull ups everyday.
5) You probably need some way to make more money in the next update, otherwise the game drags out for too long just to raise money to buy stuff. Maybe the pipe screwing workshop can generate more money, otherwise everyone will just skip.
Once again, thanks for the effort so far.