However, based on the phrases "the twelfth day of the tenth month in the year tsuchinoe-uma (583), during the reign of Emperor Kishishima (Kinmei)" in "Jogu Shotoku Hoo Teisetsu" (a biography of Prince Shotoku) and "the twelfth month of the year tsuchinoe-uma, the seventh year of the reign of Emperor Amekuni Oshiharuki Hironiwa (Kinmei)" in "Gango-ji Garan Engi" (a history of the origins of Gango-ji Temple), many people seem to think that Buddhism was introduced in 538.
しかし、現在では『上宮聖徳法王帝説』（聖徳太子の伝記）の「志癸島天皇御世戊午年十月十二日」や『元興寺伽藍縁起』（元興寺の成り立ち・変遷を記述したもの）の「天國案春岐廣庭天皇七年歳戊午十二月」を根拠に538年（戊午年、宣化天皇3年）に仏教が伝えられたと考える人が多いようである。