@tatsumoto @deadheat @Suiseiseki @coolboymew @feld @hakui @sun @takao
Anyway you can easily decompile the proprietary VN with FOSS tools to take the content from it and simply read text with `less` for language studying. Not a VN example, but Gayshit Impact has great seiyuu work and a large amount of text to create nice japanese/chinese anki deck.