A fierce clash ensued over the acceptance of Buddhism between the minister of the pro-Buddhist faction SOGA no Umako, and MONONOBE no Moriya of Muraji who belonged to the anti-Buddhist faction, as well as KATSUMI no Nakatomi who belonged to the clan that was entrusted with the oversight of rituals of the Shinto gods.
仏教の受容を巡って、崇仏派の大臣の蘇我馬子と排仏派の連の物部守屋、神祇を司る氏族の中臣勝海は激しく対立していた。