Where can I find this hand cream in Tokyo?

Hi everyone, my friend (who does so much for me and never asks for anything) finally asked if I could get something for him while I’m here in Japan. He asked if I could find this specific hand cream, Arima Onsen Kamejirushi Mineral Moisturizing Hand Cream. I’m also going to Nagano so I can look for it there too. But any help or direction would be great. I won’t be going to the area where it’s created but thought it might be in Tokyo. Thank you!!!!!!