Double-edged sword made of unknown material and is able to cut through various substances.
Heavenly Maiden's main weapon is a double-edged Chinese Straight Sword. She has proven to be very skilled in wielding this blade and was first seen cutting off the arm of a Hero Killer. The sword itself does not seem to be made from ordinary steel as it has been shown to easily slice through various hard materials and even energy. The weapon is lightweight and Mikoto Kujo uses a combination of martial arts and fencing techniques to deliver fast and quick strikes.