In the complicated present society, personal characters are getting standardized.
Also, people show their aggression toward others to keep their interests.
On the other hands, they make their own defensive measure to protect themselves and their interests. Sometimes, it hurts them because it is strong too much.
I think this is the way people do in the contemporary society.
Through expressing defensive measure more than needs, I am trying to criticize this age in which people replace humanity with material value.