Upon learning that MINAMOTO no Yoshinaka was enroute to Kyoto, the Taira clan decided to flee the capital, absconding with the child Emperor Antoku, with Kiyomune also following.
寿永2年（1183年）、平氏は源氏の源義仲上洛により安徳天皇とともに都を落ち、清宗もこれに従う。