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.

Is some of the gallery set to be released in chapter 2? I cant seem to unlock the last image for Kousuke or anything for Ryouko or Mika

You need to proofread your work.
Or better yet, get someone fluent in English to do it.

What kind of future tags can we expect? Harem? ntr/sharing? Femdom? (given the setting seems possible) Futa, Pregnancy?

Stuck in a loop of strength exersizes, yard exersizes, lunch, metal work using spanners, every day is the same and totally dull, boring. Its meant to be an adult game but onlay had sex with raven before arrest. Nothing but the stupid loop in prison with no option to look for the scabbard or do the other missions. Totally boring repetative nonesense every day on pipes and frames. Whats the point? Not able to do anything else. What am i missing????

This game has great potential. I thought it was going to be heavy like all the other sandbox but this one surprised me and is entertaining. 

And a question, what is the pattern to follow for Mika's missions, in case she allows me to interact 2 times in a row in a day (when you train to have strength) and there are days that even if you train you do not interact with her (the days are Sunday and Monday). 

And what you buy at Mika's store is still not available?

Any petites?

Why am I not getting any further, or does the 1.0 version not yet have more content? I can only do this intimate massage, for which I get 50$. I need 1000$ for the phone, so do I have to do it 20 times? Because there's nothing else to do, is there? Only sleep, workshop or massage or?

Great game, love the renders, but for reason I seem to be stuck on the day 15 already massaged Youko´s breast but then when I click on her on the cafeteria it sends me directly to eat and then to the workshop :S it keep repeating itself

Hi dev, does the Mc have any supernatural powers?  because that overview really sounds like the perfect setting for a Femdom game lol (no interest in that content).

It  would be nice (and I would appreciate it) if you could put a list of tags and/or planned content.  

By the way, the part where it says "the protagonist must get close to everyone inside the 'Prison of Lust' to gather the necessary information...", doesthat means that there is forced content(?) and that the player cannot reject any of the characters?

Thanks, good luck.