A toolset for learning Japanese with focus on listening comprehension. Most resources suggest a "writing systems first" approach, which seemed counterintuitive to me. So I started coding my own tools 10 years ago. First, a small spaced repetition system for vocabulary connected to forvo (pronunciation database) and lateron an addon for Anki (popular spaced repetition system). The addon is made for studying with movies and includes a dictionary and a parser for converting the original script to something simpler.

In retrospect, it was totally worth it: I reached a decent amount of fluency in listening comprehension and used the tools to create a Japanese course for others, which became popular on ankiweb: https://ankiweb.net/shared/info/911122782

Getting tempted to give Japanese a shot when seeing that deck. I spent a lot of time with subs2srs for German but found it difficult to match subs with audio. There's probably more media available today thanks to Netflix but I'm probably past the Anki stage for that language.

this is very wholesome, is there a way to port it for other language.

I'm creating a free Japanese course that ships as a flashcard deck for Anki. It completely starts from zero, maybe it helps you: https://ankiweb.net/shared/info/911122782 I guess this format is similar to what jpdb offers, maybe you can even import it there. The deck currently covers most grammar and a little more than 800 words on ~1800 flashcards. It's mostly based on anime though, so at least some interest in this is beneficial ;).