purge

Shomu grandfather's brother's son named "Funado".
He was appointed Crown Prince by Shomu's last will and testament.
（Although his mother is unknown his grandmother was from Fujiwara clan.）

By the way，Great-grandfather of Shomu was "Tenmu".

He wasn’t in the original heir to the Chrysanthemum Throne.　
He became the Emperor after win to the war with the Emperor (his brother's son).　
　
"Hold the bloodline of Tenmu.”

This testament of Shomu was also in that sense.　
But Funado was soon ousted Prince position by Nakamaro.　　

・・・・・・・・・　
　
Then ”Ooi” became crown prince.
He also was in the bloodline of Tenmu who lived in a mansion of Nakamaro.
He was married to Daughter-in-law of Nakamaro's dead son.
　
At that time，The name of the Emperor and Empress had been banned from use.

Kamatari and Fuhito was originator of the Fujiwara clan.
Nakamaro banned the use of their names together with emperor name.　
　
Nakamaro newly established the government post，got the military authority.　　
Rebel people against Nakamaro who had purged as demotion or banished to the provinces.
They had planning of revolt but transpired beforehand.
They were arrested one after another.
　
Otomo-no-komaro was the central figure of this revolt who was killed under torture.
Tachibana-no-moroe son also was likely to have been killed in prison.
Older brother of Nakamaro also had been relegated to the provinces implicated in the arrest of his son.
　
In 758 AD, Emperor Koken was abdication，Ooi was became Enperor Jun-nin.
Nakamaro got enormous economic power and unparalleled dictatorship.