It seems to be a limited edition sake, with only 120 bottles produced per bottle. In the past, it was used for Nikko first class flights departing from Kansai Airport.
It is very easy to drink and has a great flavor. It is said to taste better a few days after opening the bottle, so I will take my time drinking it.
At a restaurant, I ordered this sake because I was curious about the label, which looked rather shabby for "Shiboritate Nama-no-Hara Sake".
The sake was not as fresh as I had expected, but had a full-bodied flavor. I was attracted by this gap and bought it on the Internet.