In May 1185, after the Taira family was overthrown by MINAMOTO no Yoshitsune, Yoshitsune confronted his elder brother MINAMOTO no Yoritomo who was in Kamakura.
文治元年（1185年）五月、平家が源義経によって滅ぼされると、義経は鎌倉にいる兄の源頼朝と対立する。