NWT See-Thru Piano Keyboard Socks Sz 5-6

It's all about fun with this music theme piano keys socks. Mesh see through top and sides, solid black sole with black scalloped edging on top. Picked this up in Japan, words on the back packaging are in Japanese, so I don't know exactly what size it is. But I'm guessing it's for sizes 5-6 since Asian women tend to have smaller feet. The height is listed as 23-25 cm, which is around 9".