Also, books such as "Tale of the Heike," "Gukansho" (Jottings of a Fool) record that Emperor Antoku (a child emperor of Heike origin who was drowned at sea with the Ama no Murakumo no Tsurugi Sword as a result of the defeat of the Heike clan) is the reincarnation of Yamatanoorochi (eight-headed and eight-tailed dragon), and that Yamatanoorochi took back his stolen treasure sword (Ama no Murakumo no Tsurugi Sword is said to be effectuated from the tail of Yamatanoorochi) and brought it back to Ryugu (the Palace of the Dragon King in the deep sea).
また、『平家物語』や『愚管抄』などでは、安徳天皇はヤマタノオロチの転生であって、オロチが奪われた自らの宝剣を奪い返して竜宮に持ち帰ったという。