When in 1203 Yoriie became seriously ill, the Hōjō clan supported his younger brother Senman (future third shōgun Minamoto no Sanetomo) as a future successor, while the Hiki clan supported son Ichiman.
[1] On a pretext, regent Hōjō Tokimasa invited Hiki Yoshikazu to his home and assassinated him.
[1] The Hiki residence was destroyed by fire and in its place in the Hikigayatsu valley now lies the Buddhist temple of Myōhon-ji.
Ichiman's younger brother Kugyō was forced to become a Buddhist priest, and in 1219, he assassinated his uncle, Minamoto no Sanetomo.
Kugyō was himself immediately executed for his crime, thus bringing the Minamoto clan to a sudden end.