Here's version 1.21 of the game:
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Game contains a full save in a separate folder.
If you can spare the money, I would still recommend supporting the dev, in his CI-EN he mentioned being aware of requests for an english translation but not being big enough to be able to afford making one. Even addressing it is a lot more than most japanese devs do and perhaps given enough support future games will have a translation from the start.
Oh, also the dev wants to add 2 more enemies in a free update later down the line.