It is well understood that the life of a human being starts from birth and ends with death, and, during their lifetime, most people will encounter many significant matters. Getting married, rearing children and living a second life after retirement are some of the more typical examples, and they are serious ones that need much contemplation. As a result, a new trend is approaching with people who want to live different lives than others. The cover stories will search deep into new social phenomena that occur over the course of our life by analyzing marriage, birthrate and a new life after retirement.