It says that the 32bit version is included but I can't find it, I downloaded the mega version, should I try a different download?
Very late answer, but if you are using a 32-bit machine, forget about playing this game. Initially, I thought that because sites like this one would immediately add something as soon as they are released, sometimes they either overlook or don't care about following updates, making it impossible for you to obtain the latest version of the game without buying it. Well, that's not the case here. First, I tried to download it from various sites, and then I bought the game from Steam, but the game didn't work either way. The fault lies with the publisher/localizer, Kagura Games. Even though there is an update specifically made for the original (2020) Japanese release to support 32-bit systems, unfortunately, that update doesn't seem to be part of the Steam (2022) release for some reason. They probably didn't care to add 32-bit support to their localization, or maybe the thought of adding 32-bit support didn't even occur to them (since 32-bit becoming obsolete). Unfortunately, the same situation was also the case for
https://f95zone.to/threads/aikagi-after-days-final-azarashi-software.172602/
Sigh, frustratingly demo I downloaded from DLsite works perfectly fine.