It's not disappearing, nor teleporting, the Quantum Warrior can deduce the truth.
He... dissolved.
At this moment, Yanagawa Fumihiko's martial arts have merged with this heaven and earth.
He can not only mobilize all his own power to fight but also control the breeze, airflow, light and the stone slab beneath his feet, becoming one with the world.
In other words, when the Quantum Warrior attacks him, it's like fighting against the whole world.
His attack slices through the air, or maybe it doesn't, he can't tell.
Yanagawa Fumihiko took a step forward, swung his katana for a fierce blow, but A40 charged ahead regardless, interrupting Yanagawa Fumihiko's motion to execute the Quantum Warrior.
A40's sensors are outdated, its system primitive, having no other mechanical thought besides chopping.
Within seconds, they swung their swords at each other more than 20 times, the movement of the weapons nearly igniting the air, with sword gleams and shadows everywhere.