I am a Korean National and I happened to have a few Japanese friends.
As they become very close together, they start to teach me some of Japanese words.
(In return, I taught them some Korean)
To my disappointment, I did not know how to pronounce "tsu" and they
started to make fun of me. For sure, their Korean is way better than my Japanese.
I know I can never master the Japanese pronounciation. Still, I want my Japanese to be
as good as their Korean.^^
So far, there isn't too much trouble to learn Japanese, but I am sure that as
more Kanji comes out, I would have a hard time.