I finally finished playing the demo including the extra scenarios, so I can give my full thoughts on it.
I'll start with the positives: I really enjoy the voice cast, I think the character designs are great, and I think the way the developers split the demo is interesting, as it allows us to get a glimpse of the LIs from different perspectives. To be honest, I think I'm also biased towards Kou and think she's a delight, so I liked the idea of playing as her for the main action of the demo.
I also think the premise is intriguing and makes me wonder if there will be some kind of outlaw situation when the MC's relationship with one of the LIs reaches its peak since the AI system in this universe seems to be indiscriminate when it comes to any kind of intense emotion.
I like how the LIs are all different shades of worrying. The entire time I played the demo I kept joking about something a LI would do or say like "I'm sure this isn't worrying and he can be trusted!" with my friends. So far, my favorite LI is Tachibana, and Akuto is my least favorite (which kind of upsets me because I love his voice. Alas, his personality just didn't make it for me).
However, there are some aspects of the demo that I didn't like.
I will agree with the other people here that the game settings feel lacking. I would have expected more than mostly glorified volume and language settings for a visual novel.
The presentation feels kind of amateurish, though I hope that those aspects will improve with the game's full release. The main offender that people have mentioned already is the contrast between the backgrounds and the character art: some of the backgrounds look very jarring and almost low-res in contrast with the characters. Some character sprites look unfinished too, especially Tachibana's indoors sprite that has his hands left completely unshaded. Also, this is purely personal, but spare for a few tracks, I personally find the music in the demo to be very grating. Some tracks sound like poorly-made royalty-free music (which hurts to say because I know some royalty-free music out here goes hard), and when you reach the end of a track, it doesn't even loop, the game is silent for a few secs before starting the track back up.
The demo itself also feels very abrupt. I'm used to demos that end with screens saying "This was the demo for [game], thank you for playing and look forward to the full game!" and similar things, but in this demo, whenever you finish one of the paths, you're just sent directly to the title screen with no warning. Talk about a cold dismissal.
As for the writing, I think that it feels heavy-handed on the exposition dump. While I can see the interview and brochure-making excuse as a good crutch to introduce the settings and the concepts in the game, it's also incredibly boring to me and is awkward to read in the moment; I think I would have preferred something more organic. The writing is also ridiculously heavy-handed when it comes to the characters and I think Tachibana's writing is the biggest offender of that. I am sure that the "cleaner" who 100% seriously claims to be about 100 years old, talks about stuff that happened 50 years ago like it was yesterday, is strong enough to crack mugs and break doorknobs just by interacting with them and is ruthless when it comes to violence is human and can be trusted! Surely he's not some kind of 100-something-y/o murderbot considering androids are confirmed to exist in this world!
I played in Japanese so I'm not sure how the English TL holds up.
Overall, I'd say this is... kind of mid, for a lack of a better word? I have felt things while playing this demo, some more positive than others, and I recognize that my qualms with the demo can be chalked up to this game being the company's first. Still, I'm not sure if I'd be willing to give the full game a try when it releases, there wasn't something about the demo that made me feel like I HAD to play more of it. If I do decide to play the full game, it will most likely be low on my priority list.
