At some point in the past, Juzo Biwa became a member of the Seven Ninja Swordsmen of the Mist and was the wielder of the sword Kubikiribōchō. Juzo Biwa deciding to enter Akatsuki, having Itachi as a partner. With the passage of time, Juzo Biwa and Itachi completed different missions and informed his partner about some principles and objectives of the organization, as well as devising formations.