Had my fill of the game, version 0.4, (experienced most of the game, got impatient at the end), so here is my review. Hope this is constructive enough. Fair warning: I have a habit of yapping, so sorry for that.
1. Firstly, will just say that this game is good! Art is good, story is good, and the gameplay is generally good too. It *is* quite obvious you've made this with RPG maker with how much unnecessary menu options there are (e.g. equip menus. Not a game dev so I don't know how hard it would be to remove things like that, but you could repurpose them or something)
2. Sorta leading off the RPG Maker comment: items. There is a total of one item in the game that you can use via that menu, and overall it feels like you could just scrap that menu option. Could potentially do the same with stimulants, if you ask me they sort of break the flow of the game slightly and there isn't even art of you using it.
3. The bartending minigame is pretty well made! Found it fun to play through, but I think there is a little bit of a conflict of interest when first unlocking the option to skip it with getting the pawn shop lady (I am bad with names, forgot her name) to do a shift, because I unlocked new art and abilities at the exact same time (wine body shot, share martini, etc.). This could just be due to how I personally routed, but if this happens to everyone I feel like staggering these timings could improve things. Can't progress the questline alongside seeing new art. Alternatively, an option to help her bartend to kill two birds with one stone as well as adding extra interactions.
4. The waitress minigame is... a little dull in my opinion. I understand it's a lot newer, but still. The pressure of the "getting drinks they ordered" timer can be completely mitigated by just leaving the dialogue window option as the timer doesn't go down until you close the window. This could be improved by randomising the order the drinks appear on the menu, would need playtesting though. The "at the table" segment is particularly dull at least imo. The gameplay loop basically boils down to "approach table, approach table, incentivise, linger, linger" and then just spamming leave table.
Oh yeah, I'm pretty sure the leave table thing isn't supposed to work the way it does. If you're at no table turns left, you can just spam press it with no downside. Shift timer doesn't go down, your energy doesn't go down. This is probably part of what makes it a little boring gameplay wise as it doesn't encourage you to back out at all. Also, you can just get stuck at the table for ages if your rng is bad. They just pull you back to the table repeatedly and not letting you leave and not allowing you to back out with 0 table turns left. This happened to me, I pressed leave table a good 10 times before it let me leave. Perhaps you could fix this by having the cyborgs have some fun with you if you run out of turn timer and get pulled back in?
5. With how much content is locked behind the sewers, I feel like there should be a bigger incentive to get the decoder thingamajig. It might just be me, but I didn't really want to mess with it because of its steep price and association with the leaving route - this is a corruption game so, well, I wanted to go down the corruption route :p . Speaking of which, I feel like you should be able to only buy it and other single use quest items only once - this feels like a slight coding oversight. Could fix this by having one of the mechanic girls (once again, bad with names) offer to allow you to use it once for whatever reason and therefore bypassing the initial purchase and sending you on your way to unlocking more content. That way, the steep price is more of an imaginary cost to simply hold you back from doing the sewer quest until you get to a certain day.
Once again it could just be me, and this next part could very well just be me getting impatient and not waiting enough days for events to appear etc.: getting the mask and therefore the gym is a little unclear to me. Same with getting the yeast for fungus room. The former feels like you should have some dialogue with the Chud King, allowing him to explain what needs doing, and the latter I'm just completely lost on. You ask IO to get you some yeast, but I have no clue where I actually get it :/
6. Basically every scene with voice acting has a few lines that are simply out of place, carry on onto the next text line, or are simply different to what the text says. Usually the lines that are different voiced to the text are simple errors that can be fixed, and overall this one is not that much of a problem.
Overall, the game is good. It needs polish for sure, but that is what development is for lol. As a miscellaneous suggestion, I feel like a quest log would do wonders. I've got a habit of forgetting instructions right after I get told what to do, so it would be great. If there is one, I suggest bringing more attention to it because I could not find it :p
At any rate, good luck and I hope development goes smoothly!