You are welcome.

MeiliSearch does not offer faceted search yet. It is one of the key feature that we are still missing but we plan to work on it in the coming weeks.

For your use case today, I suggest you use Typesense if it fits your needs ( they handle faceted search already ) or Tantivy or Toshi.

To manage different languages, you should make one index per language. MeiliSearch and Tantivy handles kanjis! We will add faceted search in the coming weeks if you are not in a hurry :D