Key Points

 - Izanagi's blade which is used to dismember Kagutsuchi after his birth kills Izanami 

Brief Bio 

Wielded by the male creator-god Izanagi, this blade is used to cut up the infant Fire God Kagu-Tsuchi after his birth burns Izanami to death. It cuts the Fire God into multiple pieces, creating eight volcano-gods. When blood drips from the blade afterwards, the Sea God Watatsumi and the Rain God Kuraokami are formed.

The name of the ten-fist sword wielded by Izanagi is given postscripturally as Ame-no-ohabari, otherwise known as Itsu-no-ohabari.

In the Kojiki (Conquest of Izumo chapter), the heavenly deities Amaterasu and Takamusubi decreed that either Takemikazuchi or his father Itsu-no-ohabari ("Heaven-Point-Blade-Extended") must be sent down for the conquest. Itsu-no-ohabari (who appeared previously as a ten-fist sword) here has the mind and speech of a sentient god, and he volunteered his son Takemikazuchi for the subjugation campaign. Takemikazuchi was accompanied by Ame-no-torifune [ja] "Deity Heavenly-Bird-Boat" (which may be a boat as well as being a god)