Ok, so I gave this one a spin, and since you asked for feedback, here I go.
Lets start with a good part - scenes have interesting ideas and delivery, animation is very good comparing to other games of this sort, models look at least tolerable, except for siste... ahem, roommate during day 1, that one looks appaling, and I'm happy that you impoved her look tremendously starting from day 2. Other from that game can be improved in almost every regard. Lets get to bad part.
Worst part definitely isn't writing like you've been hinting during game, its coding and playtesting. Even before actual game start, its immediately noticable. Why is game called "Project2" at the window header, rly? Why its size exceeds 2.5 gb? Its full fledged AAA title size, not a RPGMaker game that doesn't even support HD resolution, lol. LEARN TO PROPERLY PACK YOUR RESOURCES. Why is it possible to save from load screen? I can save game during main menu, holy shit, i never ever seen such blunder in any game before.
Playtesting for day 2 part is not existent. I downloaded the game, and I expect it to work, that's given. Its not even some closed alpha that only your patrons can see. Releasing game in such state is DISRESPECTFUL towards to your potential audience. By bad state i mean it was impossible to me to complete even happy run (walkthrough where you do everything like you're hinted). I literally had to save edit some switches to get to second half of day 2. I don't mind reporting bugs, but i don't even need to do it, because you can find few dozents of them yourself just trying to complete game once. Now i notice you have bugfixes as separate download link, I can only advice you to pack fixes in and reupload whole thing.
Leaving aside some bugs there are plenty of things from coding perspective you can improve: some of SFX I found badly made and distracting (esp that whimpering sounds MC makes when first spanked), it should be possible to turn them off separately. How do I hide text box? Is it even possible to fap on CG if there is big fat text box obstructing the view? Why is approaching orgasm is implemented as screen fading to red? I mean red screen flashes are universally reserved for pain, not pleasure, cmon. Walking models look stupid when watched from the side, people tend to bend knees while walking, you know? Map passability: its possible to step on tables, beds, walk in walls... etc. i think you got the point.
Now little subjective stuff: sist... I mean roommate character lacks focus. I can't decide is she trying to be bitchy, or loving or both? You have this anger variable, it implies branching, otherwise its useless. Make her do wantonly cruel stuff when she's angry, and apply loving approach when she's happy. Why is it I'm forced to lick dirt and drink pee as a good boy reward? How is that even differnt from making her angry?
Scenes are not bad individually but I think you can arrange them in different order. Why is there literally 3 spanking scenes one right after the other? What's the point? It especially frustrating cause I can see how much effort you put in those, but you don't need to put them all in row you know? Then there are something like 3 piss drinking scenes one right after the other... It seems like 3 is your magic number.
P.S. totally forgot about most frustrating part. The way you made it necessary to wait out your rest time to access later scenes it just BAD game design and is unnacceptalbe. I was sure its bugged and alt-tabbed game to get to forum, when suddenly I hear some event appearing on its own because timer got off. If i'd close the game I would never even notice it.
So starting from the top. Glad you liked the animation over all. Sorry to hear you disliked day one Iris so much. Man people really don't like her original hair. It looks good to me, but then again I'm more gay than straight so that might have something to do with it.
Oops didn't notice the header, i'll be sure to change that going forward. As far as the size, you're definitely right. as I go forward I'll have to find a way to compress the images. The animations eat up a lot of space as it is, and I forgot not everyone has fast internet. The problem I run into is compressing the images, without losing their transparency. If you know how to do that, I'd appreciate any advice.
The saving from title screen is because the title is made through an event. I should probably go back to using the default save menu, It's just less useful during gameplay.
Yeah I probably rushed out day two a week sooner than I should have. I really wanted to get it out by the end of this month, because I set a deadline for myself and I didn't want to delay it, but it's probably better to just put it off for a week than release to early.
I intend to package the bugfixes together, in fact there will be a complete build uploaded later tonight. Uploading separate bug fixes just allowed me to get the fixes out much faster than re uploading the whole game.
Yeah I'm aware some of the sounds aren't great, that whimpering in particular. I haven't been able to find a good source of audio clips, but perhaps I'm not looking in the right places. I've tried to make make it so you can hide text boxes, but the only plugin I found seems to not work with the other plugins already in the game. I've tried to add pauses without text boxes, but I would like to find a better solution. As far as the fading to red for orgasm, what color would you prefer?
The walking models are a compromise in favor of time. I could make the walk animations look smooth, but it would require several more frames, and with the amount of clothing options that are going to be in the game I would have to spend a great deal more time to accomplish that. It's something that I will probably do better in my next game, but this is my first attempt, so I'm still learning.
I'll go back and recheck the map passibility. That's definitely something I need to get better at testing for.
As far as the sisters attitude goes, I can see where you're coming from. She treats you roughly either way, because that's what I like. If I made her act too nice when you're obedient it wouldn't be interesting for me. As far as there being too many spanking scenes in day one, I'm well aware. It's just something that ended up happening. I tried to avoid it in day two, but perhaps I did the same thing with the pee scenes. I just make whatever scene interests me at the moment, so i guess that can make for repetitive scenes if I get really into a certain fetish. Although there are games that focus on just one fetish, so I don't think it's necessarily a terrible thing.
Yeah I've decreased the wait time drastically for the timed events, so hopefully it won't feel cumbersome to people. I wanted it to be something that naturally happened as you walked the house, but clearly I made the timer far to long.