Creating flashcards from cbz files

I've done a bit a research and have managed to sketch out some likely approaches for dealing with manga scans, but I'm curious if other enterprising sorts the likes of which haunt this sub-reddit have any particular workflows that work well for them with respect to immersing in manga cbz's and readily pulling in text and image to create a flashcard. Obviously some type of OCR step will need to be a part of the workflow here, but I strikes me as particularly tricky when you need to account for furigana and non-standard fonts. For example I am most interested in creating flashcards for Berserk which which has some especially stylized text when apostles and other demonic entities speak.

by moustache_bird