It's a small shop on the basement floor in Shibuya 109 and easy to find as it's just inside the underground entrance directly connected from Shibuya station.
There are many items well displayed but they play music too loud,, maybe for being in Shibuya. Because the shop assistants shouts to beat the music, it's very noisy but very much Shibuya.
I like the staff as they are very kind and polite.