So what's the deal with this new release? The previous game is still in early access and has no full release date. It seems kind of questionable to announce a sequel before the first early access release is still not finished. Will the owners of the original receive a discount at least?...

I have always felt that the heroine in this game should be given a companion to talk to, just like the magical girl’s pet in anime.

Was very interested in the original game but with this release and the lack of information im very confused. Is this a new game ? Is this an updated version of the early access ? If so, what will happened for the people that bought the early access ? Why not just updating the early access ? Dont know if I shouls buy the early access or just wait for this. So confusing......

Is it possible to launch it in 2024?

Steam thinks the game won't work on 64 bit versions of macOS, but that's probably not true since even the 'old' one runs fine on Catalina and above. You should update the relevant info or Steam will show the game as unplayable on newer Macs and thus hamper potential sales....