Where to buy in Japan?

Im' going to Tokyo and Kyoto in 2 months.
I'd like to know where I can go to buy a Japanese tenor uke (medium to high range, koa and all that sort of nice things).
I've spotted the Kiwaya shop in Tokyo, but on their website I don't see any fine grade tenor.
What would you recommend?

TIA.

Alain.

Ohana Ukulele Shop
Yamano Music

These next 3 are builders/luthiers:
Urabe Strink Works
Makani Ukulele
M's Craft/Kai Ukulele

You may also want to check the authorized dealers for any of the Hawaiian made instruments (Ko'olau, Kamaka, Kanie'a, KoAloha). They love 'em in Japan.

I read up about a place called T's Guitar in Nagano. THey have some high end stuff.

Kanaka916 and SuzukHammer, thank you!

Alain.