Rokuro takes out a small dagger from his pocket. The dagger gave off a very dangerous and familiar aura; Rokuro had seen the same dagger used by the Demon Lord's first right-hand man in the future.
Rokuro opens the runes on the dagger and quickly advances, throwing the dagger. The dagger that cuts through space gets faster because it is in space, and slows down when it cuts through time around it. When it hits the ground, it looks like an atomic bomb exploded.
Ken quickly picks up the dagger and unseals it. Now the dagger is stronger than before. Ken throws the magic he collected at a single point of the dagger with all his might.
However, Rokuro loses an arm while trying to stop the dagger. Rokuro tears off the arm of one of the dead demons and attaches it to his own arm.
Ken takes the sword given by Ken from the future and rushes forward. Rokuro takes his dagger and throws it forward, and the swords collide.
Ken slashes through space and Rokuro takes fatal damage. Just as he is about to retreat, Ken attacks the place where Rokuro was damaged and kills Rokuro.
As the Demon Lord senses Rokuro's death, his anger increases and he becomes even stronger. Rokuro's death deeply affects all the warriors and encourages them even more.
Rokuro's death changes the fate of the war and brings new hope for their victory. The end of this war will be a life-changing turning point for everyone.