A trace of doubt flashed in RX-01's eyes, as if he didn't understand why Mark could still burst out with such powerful power.
Every time RX-01 attacked, he had almost inhuman strength, and every time he swung his sword, it seemed as if he was going to tear Mark apart. The metal walls and the ground in the laboratory were cut into deep gullies during their battle, sparks flew, and the cold air was pressing.
"Karl died to protect you, is this all you can do?!"
RX-01's voice was icy and piercing, with a hint of sarcasm and disdain.
Mark didn't speak, but the ice sword in his hand became more and more fierce, as if he had turned into a frost dragon, roaring and rushing towards RX-01.
He knew that RX-01 was deliberately provoking him, making him lose his mind and reveal his flaws.
He couldn't be fooled, he had to stay calm, he had to find RX-01's weakness, and avenge him and Karl!
RX-01, who had been unable to attack for a long time, roared, gave up the tentative attack, and concentrated all his energy on the ice sword, ready to give Mark a fatal blow.
Mark sensed RX-01's intention and did not choose to confront it head-on. Instead, he took advantage of the gap in RX-01's attack and quickly dodged behind it.
RX-01's attack missed, leaving a deep gully on the ground.
Before RX-01 could react, Mark seized the opportunity and stabbed the energy-filled ice sword into RX-01's back. The ice sword penetrated its ice armor and went straight to the core.
"Uh ah..."
RX-01 let out a painful wail, his body trembled violently, and the ice sword in his hand shattered, turning into ice crystals and dissipating in the air.
Mark did not hesitate at all, pulled out the ice sword, and brought out a stream of blue energy.
RX-01 stumbled back a few steps, and a huge crack appeared in the ice armor on his chest, and blue energy continued to leak out from the crack.
"You... can't be..." RX-01's voice was intermittent and full of disbelief.
Mark ignored RX-01's astonishment. He held the ice sword tightly in his hand. The blue light on the sword became brighter and brighter, illuminating his cold face.
"Karl's sacrifice will not be in vain. I will definitely avenge you!"
Mark roared, poured all his energy into the ice sword, then raised it high and slashed at RX-01.
RX-01 stretched out his arm desperately, trying to resist this fatal blow, but it was too late.
Mark's ice sword, with its overwhelming momentum, instantly split RX-01's body in half.
RX-01's body fell to the ground with a bang, turned into countless ice crystals, and dissipated in the air. Only a huge ice pit and blue energy fragments scattered on the ground were left on the ground.
Mark stood there, the ice sword in his hand slowly disappeared, he looked at the place where RX-01 disappeared, his eyes were complicated, with sadness, anger, and relief.
He slowly walked to Karl's body, gently picked him up, put him on the ground, and then stared at his face silently.
"Karl, I have avenged you..." Mark's voice was very light, but full of determination. He stood up from the ground, turned around and walked away. His back looked particularly tall and lonely under the setting sun.