That all can you get for that moment. Maybe after 3-5 year developer update the game, and we can get something bigger.
The dev seems just to be overloaded or a perfectionist more than anything, they had (Keyword here) a personal page
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but if you go to it...
"This site has encountered a unexpected error"
Sounds pretty much like what the dev has been saying about being sidetracked so far lol.
I guess Sirdine ( Iwashiya ) should just be called Sardine instead... Crammed into a can forever and preserved with salt from players never getting the finished game. Doesn't seem like they're trying drag development out like most patreon games, but who knows?