Futsunushi no Kami

Futsunushi is a deity of the sword whose name derives from the sound of a blade cutting through the air (futsu). In the Nihon Shoki's account of the Kuniyuzuri, Futsunushi—rather than Takemikazuchi alone—is dispatched as the principal emissary to negotiate the transfer of the earthly realm, sometimes accompanied by Takemikazuchi.

The Kojiki notably omits Futsunushi from the Kuniyuzuri narrative entirely, instead giving the central role to Takemikazuchi alone. This discrepancy between the two sources has been interpreted by scholars as reflecting rival claims between the priestly lineages of Kashima and Katori shrines.

Katori Jingu in Chiba Prefecture is the principal shrine of Futsunushi, and together with Kashima Jingu, the pair historically served as the spiritual guardians of the eastern frontier. Both were among the first shrines to receive the prestigious 'Jingu' title, attesting to their ancient importance.