I love the style here, it reminds me of old PC-98 eroge along with the viewport window and the like. However I want to suggest some QoL issues I found, although I understand you are pushing Ren'Py so some things may not be possible.
- Loading bar for explore. It adds a delay to exploration that I'm not really sure why it's there?
- Nothing events. Rapidly clicking explore over and over and getting nothing, can we add a 'explore until event' button? Accepting the risks of the amount of time to get to the next thing.
- Fast combat. So being able to skip animations would also be nice.
- Any way to reduce cuts to black? There's quite a few when say, you find treasure. It takes long there, too.
I like this a lot though. Would you be able to mention what sort of content/interests we'll see?