Okay, something that pissed me off about this game was that there was no auto-text for the dialogue. I found out how to add it in.
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Download the file there.
Go to this
...\The Curse of Kubel\www\js\plugins
Cut and Paste Qz_AutoAdvance.js into the above folder
Then go to
...\The Curse of Kubel\www\js
Find the file called 'plugins'
Open it with notepad
At the bottom you'll find a line that says:
{"name":"GraphicsRenderFix","status":true,"description":"放置していると画面がフリーズするのを修正","parameters":{}},
paste under it:
{"name":"Qz_AutoAdvance","status":true,"description":"","parameters":{}},
Save the thing. Open the game. You should be able to auto-play dialogue with the 'a' key. The arrow at the bottom will turn into another color to signify it works. This should work for all RPGmaker MV and MZ games.