I must admit, this is one area I've found LLMs to be surprisingly strong. They're REALLY good at reverse engineering obscure platforms, languages, game engines; and quickly throwing together super hacky tooling.

I was able to reverse engineer the PS4 edition of "New Game!: The Challenge Stage", which was never released in English. I've now fully translated it, added proper text wrapping and additional text boxes where text would now overflow. Along the way I've fully decompiled (with byte exact recompilation) the Squirrel scripts for the entire game, built atop the game engine of a now largely defunct game studio. Prior to this I hadn't even heard of Squirrel scripting language. I had most of this done in under 24 hours.

I'm not in any way a part of the visual novel community. I just did this because I enjoyed the New Game! anime way more than a near(?) middle aged man probably ought to.

P.S. My condolences to Yorhel's friends and family.

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.