As of right now the intro, battle backgrounds, and a few of the dialogue backgrounds are AI. I am making an effort, albeit a very slow one, to replace these images, they are all placeholders and will all be removed eventually. I'm sorry I can't give a concrete timeline for when they'll be replaced, it's a bit difficult to find the time to get art to replace them while trying to continue to build new content for the game, but it is something I'm working on for sure.
Ah, I see! No worries about a concrete timeline, knowing that you're wanting to replace them is good enough for me. I want to reiterate that I am REALLY enjoying the game otherwise and that I think it's very well put together, the AI stuff has been my only substantial concern so far. Best of luck on the new content and other things going into this project!