>>214167220
It's totally possible if your general Japanese level is good and all you need to do is brush up on aspects related specifically to the test that don't appear outside it too often . N1 is only B2 to C1, which for Japanese is impressive but it's not insane that someone would get there with just immersion and self-study, plenty of people do it.

>>214168299
>I was one of only five people that took the N1 test out of the 13000 who had sat for the JLPT this time.
That's impressive, congrats.