Wow, that’s very impressive! I also studied a bunch of languages, but I forgot most of it already, and I can only read books in German (my mother tongue), English, Japanese, and (I hope I still can do it) French…
Anyways, if you want to start reading together with other Japanese learners, I’d like to invite you to the book clubs! There are clubs of different levels depending on your grammar abilities. You can also read previous book picks and check out the discussion threads (and even still ask questions if you’d like - there are still people around who will answer, I’m sure).
The Beginner Book Club is currently voting on their next pick, so dive right in if you like 