I bought it at Heiwa Sake Brewery's store at Wakayama City Station, where I stopped by without any prior knowledge. The sweetness, acidity, and cleanliness of the wine were well balanced. It was delicious.
It is interesting to note the difference between the first sip of the wine and the sip that lingers afterwards. The first is sharp and dry. The sweetness that lingers slightly afterward.
This is one of the first I've ever heard of. Maybe the first sake from Chiba. It is juicy, elegant and sweet. You can go as much as you like in summer. Delicious!