: Don't you think Idol stars who are young and active are on familiar terms with each other as they are on the stage, pleasant and friendly? However, as you've just seen in the clip, K-pop stars strictly obey the order of rank in order of age. What you can learn from various channels of media is that the greeting manners are more strictly obeyed among the idol stars. As idols stars are accustomed to the greeting manners according to the order of rank, sometimes it seems too excessive. The greeting manners are differentiated depending on the age and the social status in Korea. People think that the younger should greet the older in appropriate manners. It is considered as the basic manner in Korea, which plays an important role in managing relations with others in the society such as parents and children, teachers and students, seniors and juniors, and bosses and junior stff