 Eventually learning of true nature as a Worm, a despairing Tsurugi aligns himself with the Worms to lead an all-out attack against the ZECT Riders.But this would turn out to be Tsurugi's plan to fulfill his promise by leading the Worms to slaughter, allowing Tendou to fatally wound him with the Maximum Hyper Typhoon so Mika can be avenged before returning to his mansion to die in peace.Tsurugi can transform into Sasword by using sword with the , which quells his Worm instincts.