Must buy from Japan

Hi,
What kind of goods, snacks, products, fashions or any souvenirs I should buy from Japan?

All of them.

1. anything you like and can't get in your home country.
2. anything you like and would have to pay an arm and a leg for in your home country.

Any specific things, products, goods or fashion brands? ?

Since you have no idea what you want, why not buy a 100kg Totoro? Or a Nissan Skyline GTR? Perhaps a Sony 4K TV? Maybe a whole tuna?
Only you can decide what you want!

Still a pretty vague question but I'll give it a shot.

Your profile says that you reside in Singapore, and something that Singaporeans often ask about is Burberry Blue Label. Flavored kit kat are also popular items. Other than that, there are countless Japan only goods that you could buy as souvenirs. Hard to be more specific without knowing more about you or who you are buying things for.

Hi yllwsmrf,
I love something unique or made in Japan goods, snacks, and products. .
eg. Tokyo banana, kit kat, Potter bags.. etc..
I'm first timer visiting to Japan.. so I just hope I could bring something from Japan which can't found or rally sell from others country. .

I think you will go many sightseeing places in Japan. my advice is that you buy it immediately, if you find something to worth as souvenirs. very often you can't find the same one in other sightseeing places.

Instructions:

1. Get into any supermarket
2. Buy anything

You should go to "shibuya" or "harajuku" .
there are many fashionable thing like foods clothes and so on!

You've already named them! Go get them then!