Minamoto no Sanetomo
When in 1203 Yoriie became seriously ill, the Hōjō clan supported his brother Senman (future third shōgun Minamoto no Sanetomo) as a future successor, while the Hiki supported son Ichiman. To avoid power falling into the hands of the Hiki, the Hōjō decided to get rid of the Hiki and their protégé.