Mitsufusa OIKAWA's great-grandson Mitsumura OIKAWA was killed in the Yuki War, so that the line temporarily went to ruin; Mitsumasa's son Mitsumura OIKAWA lost his territories, ran away and sought refuge in the KASAI clan.
及川光房の曾孫・及川光政は結城合戦で討死、結城氏は一時滅亡となり、光政の子・及川光村はすべての所領を失い、逃げて葛西氏を頼った。