Ichibē's "zanpakutō" is and takes the form of a large calligraphy brush. It is released by the command . In Ichimonji's shikai state, the brush takes the form of a curved blade, while the handle remains the same. "Ichimonji" has the ability to release ink with every swing it takes. Anything that Ichimonji's ink covers loses its name and powers. Ichimonji's bankai is . Ichibē's bankai is uniquely activated by calling out instead of "bankai", as "Ichimonji" was the first Zanpakutō to acquire an evolved form long before the term bankai existed. Upon activation, "Ichimonji" becomes a long, thick thread that coils in the air around Ichibē. With "Shirafude Ichimonji", Ichibē can give and change the name of those who have been struck by the ink of "Ichimonji" by writing kanji on their body; doing so gives his target the properties and abilities of the name granted.