A country I'd like to visit

So whenever i get this question i struggle to find an answer, there is so many places i would like to visit! but my life time dream has been visiting Portugal, Greece and Japan. I'll choose the last one since reaching Asia seems way more difficult than Europe, here it goes:
To visit an asian country sounds really interesting and refreshing for me, everything it's so different so it sounds like so much fun! My main reasons to choose Japan between all the asian countries are; first; it's an island (and that's pretty unique by itself), second; the night city view seems amazing, third, the food! i have seen photos and everything looks so good and yummy, not to mention that even food seems to be cute there and fourth the Harajuku street; that's a place in Tokyo where fashion trends are all so beautiful and extravagant, and everyday teens and adults reunites there just to show their amazing outfits. 
Apart from the fact that the culture is very different and that their architecture looks interesting, i don't know that much about Japan. If i ever go there, i would like to take night walks and get some streetfood (i have seen how some food trucks or similar are open until really late). Finally, i would like to go there only as a tourist, since being a worker or a student in Japan seems to be kind of stressfull.