Brings back memories of how I did much the same for the PSP spin-off VN of the GA Geijutsuka Art Design Class manga/anime (that, of course, also originated from Manga Time Kirara and also had a big focus on art), although those were pre-LLM times. It even used Squirrel scripts too!

I second the condolences, tremendous loss for the people who knew Yorhel, as well as for the VN and open source communities.