 His violent and abrasive character from the beginning caused widespread resentment among his vassals.After disagreements with Mochiuji, his "kanrei" Uesugi Zenshū organized a rebellion against him (the so-called "Zenshū no Ran") with the aid of nearly half the "daimyōs" in the northern and eastern provinces.Thanks to this support, Zenshū could take Kamakura and Mochiuji had to flee.