Why is the 4-dimensional space bag considered Doraemon’s most powerful treasure?
Among Doraemon’s thousands of treasures, the 4-dimensional space bag is probably the one that appears most often, but is also the least mentioned. Doraemon’s 4-dimensional space bag is semicircular in shape and very simple in white. In addition, in extended story collections such as Doraemon Extra or Doraemon Army Extra, which are set in the…