Yep. They are still in the same old business.
GG shop is operated by the holding business Gendai Guitar Co. founded by late Masaru Kohno and is still issueing the best selling classical guitar magazine Gendai Guitar.
https://www.gendaiguitar.com/index.php? ... anguage=en
It could be included in Tokyo points of interest for guitarists visiting Tokyo IMPO as Kohno was one of the key figures of the earliest Japanese classical guitar culture.
Kurosawagakki Nihon So-Honten in Shin-Okubo is one of the largest classical guitar dealer outlets in Japan. Also, Kurosawa is one of the oldest music stores in Japan. They may have a Torres or Bouchet for six figures but I am not sure.
It's simply one of the largest music stores with the largest collection of high quality guitars, and is famous for its Martin dealership.
There was yet another one caled Espelansa (I am not sure but the owner was Yasumasa Ohara and his wife who both were renowned performers/educators) but they have gone out of business as it looks like online.
I hope this helps you.