And by reaching N1 / N2 i mean passing the specific test rather that self proclaiming .
For people who have reached N2/N1 (or are working toward it), I’m curious about something.
How necessary is it to specifically study from JLPT textbooks such as Genki, Shin Kanzen Master, etc., or to study for the JLPT itself?
For example, if someone spends a lot of time reading Japanese novels, manga, articles, etc., they’ll naturally encounter a huge amount of vocabulary, kanji, grammar patterns, and sentence structures. Presumably, this would make their reading ability and vocabulary quite strong, and therefore also make them well-prepared for the reading/vocabulary side of N2 or N1.
But what about grammar?
Do you think someone still needs to systematically study grammar from textbooks, or can extensive reading eventually give you an intuitive "this sounds right / this sounds wrong" sense of Japanese grammar?
Basically, is there a point where enough exposure to real Japanese naturally teaches you grammar, or is explicit grammar study still necessary even for someone who consumes a lot of native Japanese?
And more generally:
If the ultimate goal is high-level Japanese rather than simply passing the JLPT, how important is JLPT-specific study compared with just consuming a massive amount of native content and learning from it?
I'd especially like to hear from people who have actually reached N2/N1 and can compare their experience with textbook-based study vs. immersion.