The Emperor escaped to the sea after the Taira clan lost the Battle of Yashima against Kamakura solders of the Minamoto clan, the Minamotos having been sent by MINAMOTO no Yoritomo.
源頼朝が派遣した鎌倉源氏軍によって、平氏が屋島の戦いに敗れると海上へ逃れる。