Now, going to introduce 2 x designer store... let's go to Marunouchi 丸の内：
He says: "The stationary opens up your idea"
Idea Seventh Sense (www.idea7thsense.com)
OR, can visit their online store at http://www.idea-onlineshop.jp/
(sorry, but all in Japanese ><)
People ask me to becareful of my wallet when going Japan, yes, i agree.
i think most of my money will spend on stationary or designer stuff instead of fashion.. haha!