Random Number Ultrasonic Blade (乱数超音波ブレード Ransū Chōonpa Burēdo?) is a prototype weapon that is used by DA. It is a portable weapon that is kept in a pack by the user. The user needs only to click their backpack, at which point the weapon disengages from the pack along with segmented connectors and pads that equip themselves on the user. The weapon in earnest takes the form of a long cleaver. When used, the user's arm where the connectors are equipped can move very fast, and by proxy, the blade. The blade is strong enough to easily cut through sturdy objects like metal floor tiles and also can easily demolish the walls and ceilings. These segmented objects can also be used like tentacles, and are strong enough to grab and carry a young girl.