Useful objects are allowed to be beautiful
One of the purest pleasures of Japanese stationery is that it does not force a choice between function and feeling. A tool can work well and still be graceful. A page marker can be efficient and still charming. A mechanical pencil can be precise and still have a little personality in its color, clip, or finish.
This matters because most of life is not made of grand gestures. It is made of recurring small actions. Writing a note. making a list. mailing a card. marking a calendar. carrying a folder. If these repeated acts are supported by objects that feel good in the hand and right to the eye, the emotional quality of ordinary life changes.
Japanese stationery seems to understand this deeply. It behaves as if the everyday deserves elegance too.