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.