On the other hand, Gokenins since the foundation of Kamakura bakufu were offended by Uchi-Kanrei and Miuchibito since Uchi-kanreia holding the reins of power despite they were of lower ranks than Gokenin and, as a result, most of tozama gokenin (nonhereditary lower-ranking vassal in the Kamakura period) joined Yasumori's party.
一方、幕府創設以来の御家人達にとって、一段身分が低く、あくまでも北条家の家臣に過ぎない内管領・御内人が権勢を振るう事への反発は強く、それら外様御家人層の多くが泰盛方に加わっていた。