Zero's staff

Zero's staff (ゼロのスタッフ) is a long thin rod that Zero uses as a weapon. She sometimes uses it as a walking stick when feigning weakness. It has a black spider emblem.

History
Zero's staff was first seen when she disguised her as Otsuyu. She didn't use it to fight, but did use it as a walking stick. Later, Zero used it to fend off the attacks of Moroha and Towa Higurashi. When the Morha, Towa, and Setsuna attacked Zero at the sight of Tōga's death, Zero used her staff to fight them until she was killed by Setsuna's Blood Blade and revived by Sesshōmaru. Zero used her staff to break the blade of Sesshōmaru's Tenseiga in anger. Kirinmaru arrives and angers Zero by separating the Rainbow Pearls, and Zero shoots s strand of web out of her staff to retreat.

Later, Zero takes her staff enemy journeying to see Nanahoshi. Like before, she uses her staff as a walking stick until she reveals her true identity. Zero then uses her staff to send the Rainbow Pearls to surround and trap Nanahoshi in a force field. After reabsorbing the Rainbow Pearls, Zero fought Towa with her full demomic power, channeled through her staff. Zero tried to goad Towa into fighting her, and when Setsuna arrived and caused Towa to calm down, Towa refused to kill Zero.

Furious, Zero raised her staff above her head, and sent the pointed end towards her neck. Just before the staff could impale Zero's neck, Setsuna cut the thread of fate that linked Zero to the spirit of Towa. The staff stopped at Zero's neck and fell harmlessly to the ground. After Zero was fatally stabbed by Riku, she used her staff to show the half-demons twins why Kirinmaru hated half-demons. Zero also used the staff to telepathically communicate with Kirinmaru before dying. Her staff fell to the floor and restored the flowers around Nanahoshi's mansion.

Trivia

 * In Episode 23, there's an error where the spider emblem on the staff is replaced with a diamond.