There was a political system called "Insei" in medieval Japan in the 11th and 13th centuries.
It was born in the trend of returning to the emperor-centered political system.
Actually, without "Insei", no samurai society was born. What kind of thing is it?
The center of medieval politics of Japan is aristocratic members of the court in Kyoto.
That era is called "Heian (平安) era".
Politics of that era is called "Sekkan politics".
Fujiwara clan was also central politics. What kind of political system is it?
Heian period (平安時代)
It is about Japan's era from the late 8th century to the 12th century.
It is regarded as the beginning of the medieval period in Japan.
In the period centered on aristocrats in the imperial court of Kyoto, the samurai finishes by taking power.
"Joko" is honorary title of the emperor who retired after giving up the throne. When Joko becomes a Buddhist, he changes from Joko to the honorary title "Ho-o".
"Joko" reminds us of the era of "Insei", but it continues as an institution from the 7th century to the present.
On May 1, 2019, the emperor Kinjo will become Joko, so it will be familiar to us.
Japan has counted from the first generation Emperor of the 125's has existed.
There were emperors with various individualities such as assassinated people, obviously mentally disturbing people, empress, people who become emperor twice.
If you look at them one by one, you can learn about the history of Japan.
Now the Japanese Imperial family is in danger of survival. If we do not respond to anything, the Imperial Family in thirty years will become one and only Prince Hisahito.
The emperor will definitely disappear from Japan as it is.
Recent female royal family establishment of the house of the principal, inheritance by male descendants? Do you also allow inheritance by female descendants? In order to understand the discussion, I also think about the Emperor.
In Japan there used to be a post called Kanpaku（関白）, which is important for political systems. It is a position to assist the Emperor. Role is different for regent. What role is it?
The Japanese royal family "Miyake" is an explanation of something.
In Japan, I call the current Japanese Emperor "Kinjo-Heika".
I do not know much about this even in Japanese.
The regency of Japan is a person who works the Emperor on behalf of the Emperor. In Japanese it is called "Sesshou" (摂政).