Review is for 1.0.0 ver.
I've only played the dev's most previous game which I really liked and found to be endearing despite its flaws (especially the art style which I am not a fan of.)
I didn't run into any game breaking bugs, just awful cloth physics and a little wonky pathing. The latter was easily fixed in my case by just calling Chika over. Sometimes she just gets stuck or decides to stare at a wall for the entire time slot, but that fixed it in all cases.
I played up until day 2 after the "ending" of the story. It was certainly an interesting choice to essentially have the game only really open up after the story segments. It's essentially one long tutorial even though the prologue itself initially is presented as the only tutorial. I have the patience to sit through all of it, especially because the story itself was very charming. The ending was wild.
I could see many not having the patience to keep playing. The tutorial period is really repetitive. Chika does do other things AFTER that part (i.e. bath, take naps, use the toilet) but you're stuck with "eat, stare at wall, stalk ouji-san" until that point. Really, if you're only interested in playing to jork it, it's not going to work well. The game is near unplayable one-handed anyways, which is normally a deal breaker for me, but again, I find this to be a very endearing game. So I'm playing for that alone.
The outfit system is another oddity. As far as I can tell, there's no way to actually dress Chika in whatever you want. She decides her own outfits for each time segment. You can buy and give her clothes, but in my time playing, she never wore what I bought her. I did see one thing in the washer, once, but she didn't wear it. Unless I'm missing something, the only way to dress her is to steal and keep whatever you don't want her wearing later. Then she'll eventually only have what you gave her. I haven't tried that, but it should work, in theory. Regardless, I'm fine if she only dresses herself, it helps keep her from feeling like she's just a sex doll.
The touch sim part of the game can be a bit annoying, but once you unlock the lock on mode and get used to the quirks, it's fine. Lock on keeps her from moving, so you can easily get to smaller body parts and if that's not enough (it always was for me) you also eventually get the ability to move and lock her limbs in place. Personally, I'll just lock on to her and whenever arms get in the way, I'll touch either her neck or armpit, and that's enough for her to move them.
The game is pretty slow as a whole, but I don't ever feel like my time is being wasted. Even after I finish washing laundry, feeding Chika, meeting the touch xp quota, I find merit in just touching her more. Body part sensitivity levels as you touch them. As long as you don't over touch one single spot, the sensitivity will only go up over time. I guess this is just enough "number go up" for me to find enjoyment. Plus, seeing Chika squirm around trying and failing to block me is amusing in its own right.
I really enjoyed what I played. Is it better than what I played previously? No. Does the addition of co-habitation mechanics detract from the touch sim? I don't think so. Would I recommend it? Only to those with great patience, but absolutely. I look forward to playing more, at least until I get tired of the gameplay loop and get all I wanted out of it.