Really wanted to visit this place for long time.
Finally, TORAYA KOBO at Gotenba, 2 hours drive from Tokyo where you can see beautiful Fuji mountain.
Very quiet on weekday, but I heard that you need to wait a few hours on weekends.
Daifuku and seasonal Sakuramochi, which are only available here.
Not other Toraya shops.
You can find English information
http://www.toraya-kobo.jp/en/