|“||He's great... my son.||„|
|~ Sohaku Kago's last words|
Sohaku was the head of the Kago family and the leader of F. Due to his unique powers, he has stayed alive for centuries. At some point, he wed Makiko Nagi, and fathered Souichiro. He has spent centuries brainwashing and possessing hapless victims through the use of his jutsu, and and disposing of them once they are no longer useful. He is responsible for the deaths of hundreds of martial artists after they were no longer useful to him.