We compared the Fukuoka and Hiroshima Denko drinks.
Both are fruity, but the Fukuoka one is more refreshing and the Hiroshima one has a melon-like flavor, which I preferred.
I had not seen a pack in the supermarket recently, but I found a 300 ml bottle and bought it. I found a fruity banana flavor that I liked a lot and remembered the time I used to drink it.
It has been a while since I drank it. I drank it cold today. It is neither sweet nor spicy with no peculiar taste, and it is easy to drink with a hint of sourness.