Lost in You is another game clearly in the genre inspired by a certain "famous Koikatsu VN" (can't name it due to review rules regarding cross-promotion), sharing aspects of denpa horror, a traumatized protagonist, and sandbox-lite system. Based on my past reading and review history, I clearly have somewhat of an affinity for this type of VN, but that's not to say I've liked all the ones I've tried reading (I don't typically review games I don't like, as I don't usually even bother finishing them) - this one does manage stand on its own as a good read.
Many aspects of the game could be described as "lite" relative to "famous Koikatsu VN" - however, this is not said as a negative of the game, but rather a contrast, and most aspects of the game are done well in their own way. The protagonist isn't traumatized and unlikeable to as extreme of a degree, and is a peer/friend to most of the heroines as opposed to their sensei. There is no amnesia/isekai situation, and the denpa sections tend to be a bit more whimsical as opposed to dark/edgy/grotesque (though there is a bit of that too). It doesn't create the same sense of looming/impending dread that some VNs in the "famous Koikatsu VN" genre go for. As a whole, you could say Lost in You currently leans more towards the slice-of-life aspects, rather than the horror/nihilistic/fucked-up-world aspects of this genre, though the latter still do crop up and are interestingly written. I personally enjoy the current direction and pacing of the story for what it is, but it could of course change in the future depending on the direction the author intends to take things.
The cast is diverse enough and well written - I could probably guess which character is speaking based on a couple lines of dialogue alone, without any name given or scene shown, in most cases. I actually prefer a more focused cast, rather than having many characters and having the story and writing diluted and progress slower across them, so I hope the development continues mostly depth-wise rather than breadth-wise.
The renders are excellent for Koikatsu. Not much else to say here - some people like Koikatsu, and some don't. For those that do (like me), better visuals are about clean, cute, and unique models and outfits, without issues like aliasing or (unintentionally) weird lighting, and some diversity in the backgrounds/environments - this game pulls it all off well. There aren't too many H-scenes so far, but they're serviceable where they exist - the situations and angles are all set up well, but the animations are the typical ones seen in most Koikatsu games (not highly custom ones like seen in a few Koikatsu games that distinguish themselves in this aspect).
A good chunk of the music is exactly the same as "famous Koikatsu VN", especially early on. Not a bad thing necessarily, as the tracks are mostly catchy and suitable for the situations they're used in. This does change a bit in some of the most recent content, with a bunch of new tracks, most of which I haven't heard in other VNs.
I'd like to give a particularly big compliment to the implementation of the sandbox-lite system. I personally prefer non-sandbox VNs, or at least games with a separate option for a VN-mode. That said, short of a separate mode like that, this game has the best convenience features built-in of any games using this system that I've played. There's an easy-to-use hint system for each event (that even has direct links to other events referenced in the hint) so you never will be completely lost as to how to trigger the next event, and a progression page clearly showing how many events you've completed/have left for each character and event type. Other devs making VNs using this style of sandbox system should be taking notes.
Overall, it's a solid VN, and one which I look forward to keeping up with the latest releases of.