After the unification was completed, however, the promise to uphold the alternate succession was broken and the Jimyoin lineage continued to monopolize Imperial succession, and consequently former Southern Court retainers continued their resistance, in their attempts to restore their own lineage to the Imperial throne, into the middle of the fifteenth century, and were later dubbed "gonancho" (ex-Southern Court forces).
合一が行われるものの、両統迭立の約束が守られることはなく持明院統の皇統が続いたため、南朝の遺臣たちによる皇位の回復を目指しての反抗が15世紀半ばまで続き、後南朝と呼ばれる。