The setting of the battle was a dark, abandoned battlefield, with remnants of destruction scattered all around. Asta could feel the rough, unforgiving ground beneath his feet as he took hold of his massive, anti-magic sword, ready to take on his opponent. Void, his opponent, stood in a menacing and arrogant posture, ready to unleash his demonic powers upon Asta. The two combatants faced each other, their eyes locked in a brutal stare. Asta, being magicless, was not intimidated by Void's magical powers. Asta took the first move, dashing towards Void, his sword held high in the sky. Void chuckled under his breath and calmly raised his hand, unleashing his True Void Form. Asta gasped as he saw Void changing into a being made of void, his body now invulnerable to all physical attacks. It was impossible for anyone in this world to defeat Void in his True Void Form. Despite this, Asta did not back down. He knew he had to win, even if it cost him his life. Asta lowered his sword and slipped it into his grimoire, and his right hand began to glow. Suddenly, a shortsword appeared in Asta's hand. Not wasting a single second, Asta lunged towards Void. Void smiled evilly, thinking he had Asta right where he wanted him. However, Asta was just getting started. He charged towards Void and slashed his shortsword at him with wild fury. The shortsword created a black anti-magic wave, cutting through Void's True Void Form like a hot knife through butter. Void felt a sharp pain and realized that he was vulnerable to Asta's shortsword, which was made out of the same material as Asta's greatsword. Astounded by the sudden turn of events, Void backed off, realizing he was no longer invincible. In that moment, Asta took advantage of Void's momentary lapse and slashed his shortsword at Void again with all his might. The shortsword glowed with dark magic power, and Void's body was overtaken by the black anti-magic wave. The black wave pulsed through Void's body, ripping him apart on a molecular level. Asta's shortsword made quick work of Void, and blood splattered all around as Asta unleashed a wild cry of triumph. Asta felt that something inside him had changed. He had pushed past his limits and defeated somebody who was thought to be invincible. He felt a newfound sense of confidence and strength. But at the same time, he felt a sense of emptiness for having taken a life. The battlefield was a gruesome sight, with Void's torn body lying on the ground, broken and lifeless. Asta stood there for a moment, panting heavily and covered in blood, his shortsword still emitting a faint glow. He knew that he would never forget this battle, no matter how hard he tried. As the sun set on the battlefield, Asta picked up his greatsword and walked away, leaving behind nothing but the remains of his fallen foe. He had emerged victorious, but at what cost? The thought lingered in Asta's mind as he trudged through the thick, dark fog that lay ahead of him, always on the lookout for his next challenge. For those who cross his path, he'll be ready, with his anti-magic shortsword and his unbeatable strength.