I recommend this shop to buy suvenior of Tokyo. "Isshin-do" is the shop selling some Japanese healthy stack and "face pack". I know it sounds strange "face pack"specialty shop. But their face packs are very unique. Here are some thier products. KISS, Attack of Titan, JoJo's Bizarre Adventure, Animal. They say the best-selling one is unexpectedly Nagasawa-kun and Chibi-maruko chan. At any rate, I love the one of "Fist of the North Star".