The imperial system in Japan can be traced back almost 2,000 years and is very different from any other king-and-queen system anywhere else in the world. The first-born son of the current emperor is always the next-in-line to the throne. Among the many duties of the emperor, the most important is to set an example to the nation and to stand as a role model for all Japanese.
The abdication of the present emperor is the first in recent history. After the current emperor abdicates on April 30, his son will become the new emperor after the enthronement ceremony on May 1. The enthronement ceremony consists of three parts.