A dispute over the adoption of Buddhism between the Soga clan, who had greatly contributed to dissemination of Buddhism in Japan, and their opponents, the Mononobe clan led to conflict between SOGA no Umako and MONONOBE no Moriya.
仏教の摂取と流布に大いに貢献した蘇我氏とこれに反対する物部氏との対立（崇仏論争）はのちに蘇我馬子と物部守屋との間での戦乱を招く。