text: One of the crucial factors that allowed the Minamoto to win the battle was that Taguchi Shigeyoshi did indeed defect.  His squadron attacked the Taira from the rear.  He also revealed to the Minamoto which ship Emperor Antoku was on. Their archers turned their attention to the helmsmen and rowers of the Emperor's ship, as well as the rest of their enemy's fleet, sending their ships out of control. Many of the Taira saw the battle turn against them and committed suicide.  Among those who perished this way were Antoku and his grandmother, Nun of the Second Rank, Taira no Tokiko the widow of Taira no Kiyomori.  The Taira attempted to toss the imperial regalia into the sea to deny them to the Minamoto but only managed to get the Kusanagi sword and Yasakani jewel into the water before the ship holding the regalia was captured.  Apocryphally, the woman who attempted to toss the mirror looked into it and died instantly from its spiritual power.  The jewel was recovered by divers; many presume the sword to have been lost at this time.  A new sword was found eventually.  A variety of explanations exist for the sword used afterward: that it was a replica, that it was recovered from the sea anyway, that it was supernaturally delivered or remade, and others; the new sword was enshrined at Atsuta Shrine.
  Aftermath
  This decisive defeat of the Taira forces led to the end of the Taira bid for control of Japan. Minamoto no Yoritomo, the elder half-brother of Minamoto Yoshitsune, became the first shōgun, establishing his military government (bakufu) in Kamakura. In this battle the Taira lost Taira Tomomori, Taira Noritsune, Taira Norimori, Taira Tsunemori, Taira Sukemori, Taira Arimori and Taira Yukimori, who were killed.
  In culture
  According to legend, the heike crabs found in the Straits of Shimonoseki are considered by the Japanese to hold the spirits of the Taira warriors.
  The battle is featured in Masaki Kobayashi's 1964 film Kwaidan, in the films third act, titled "Hoichi the Earless".
  The battle is the subject of an opera by the Thai-American composer S. P. Somtow.  Called Dan no Ura, the opera premiered in Bangkok in 2014.
  The 2021 animated film Inu-Oh also references the battle in its exposition.
  Episodes 10 and 11 of the 2021 Naoko Yamada animated series The Heike Story portray this battle.