and cause it to move in the direction of his swing. Taking advantage of this magic, Yamato Takeru used his other gift, fire strikers, to enlarge the fire in the direction of the lord and his men, and he used the winds controlled by the sword to sweep the blaze toward them. In triumph, Yamato Takeru renamed the sword ("Grass-Cutting Sword") to commemorate his narrow escape and victory. Eventually, Yamato Takeru married and later fell in battle against a monster, after ignoring his wife's advice to take the sword with him. Folklore Although the sword is mentioned in the , this book is a collection of Japanese myths and is not considered a historical document. The first reliable historical mention of the sword is in the . Although the also contains mythological stories that are not considered reliable history, it records some events that were contemporary or nearly contemporary to its writing, and these sections of the book are considered historical. In the , the Kusanagi was removed from the Imperial palace in 688, and moved to Atsuta Shrine after the sword was blamed for causing Emperor Tenmu to fall ill. Along with the jewel () and the mirror (), it is one of the three Imperial Regalia of Japan, the sword representing the virtue of valor. is allegedly kept at Atsuta Shrine but is not available for public display. During the Edo period, while performing various repairs and upkeep at Atsuta Shrine, including replacement of the outer wooden box housing the sword, the Shinto priest Matsuoka Masanao claimed to have been one of several priests to have seen the sword. Per his account, "a stone box was inside a wooden box of length , with red clay stuffed into the gap between them. Inside the stone box was a hollowed log of a camphor tree, acting as another box, with an interior lined with gold. Above that was placed a sword. Red clay was also stuffed between the stone box and the camphor tree box. The sword was about long. Its blade resembled a calamus leaf. The middle of the sword had a thickness from the grip about with an appearance like a fish spine. The sword was fashioned in a white metallic color, and well maintained." After witnessing the sword, the grand priest was banished and the other priests, except for Matsuoka, died from strange diseases. The above