Perhaps the people sad It does not show to the general public to know but sadness in mind. That's sad but don"t have to do anything like the others to express sadness. But you do not need to do anything like anyone else who expresses sadness. If we go very sad expression The person next to them is even harder to make him sad as we are concerned with. What we can do is strong enough for the people around us who are still alive. Live happily next. Because everything must be done on the mound.