However, Emperor Godaigo claimed that the Jingi he had given to the Northern Court was a fake, that he had the legitimate right to succeed the Imperial throne and established the Sourthern Court (Japan) in Yoshino (Yoshino-cho, Yoshino-gun, Nara Prefecture).
しかし、後醍醐は、自分が北朝に渡した神器は贋物であり自己の皇位が正統であると主張して吉野（奈良県吉野郡吉野町）に南朝(日本)を開く。