The animal is called an ermine specifically during the winter when its coat is pure white to match the snow around it. During the spring and summer, its coat turns a reddish brown color and is called a stoat.
Shopping in Tokyo, Japan is next level. From multi-level departments stores to tiny specialized shops that only sell chopsticks, Tokyo has it all. It can be overwhelming, but there is one retail concept you have to check out while in Tokyo: 100 yen shops