とっきー
The brand name is said to be "Yamazan no Kotobuki," but details are being withheld.
The question "What is this? is a quaint way of asking you to think about it and try to guess it.
You can find more information with the QR code.
The one I drank this time was fruity and refreshing.
It was delicious!
But I couldn't find the details because the QR code had expired lol.
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