His mana sense didn't work the same as Jason's, or anyone else's for that fact.
He could sense the mana in the air; he could feel when it was unnaturally pushed in a direction. This was his way of interpreting someone's actions.
When he felt the mana particles outside being wildly pulled away from Agnus, he knew the attacker brought his elbow back to use his sword, perfectly foreseeing the path.
The man swept his sword back before piercing it through the window, a clamorous shatter of glass falling inside the room.
Agnus acted instinctively, using his right sword to angle his arm around the window and stabbing his sword forward, but it missed. The man smacked it away before leaping in, his face shrouded by a jet-black mask that only displayed his eyes.
He brought his blade up, piercing it downward at Agnus, who calmly stepped inside, letting the sword fall behind him before raising his knee straight into the man's stomach.
His attacker thoughtfully clenched his stomach muscles and arched his back, allowing his body to receive more of the force naturally as Agnus's kick weakly connected.
A cold sensation in a thin line was felt in Agnus's back as he felt his flesh splitting in two, and the hot sensation of blood running down his back.
He quickly disengaged and analyzed the injury.
'Not severe.' He concluded, instantly dashing back to face the man.
Jason, on the other hand, was simultaneously defending himself against three relentless attackers, their blades dancing in a rhythmic tune as each blade was not delivered with the intent to kill, but to trap him.
If one blade stabbed at his head, another swept in a wide arc to stop him from moving to the side, and the last at his leg to stop the slight extension of the knee when one bent down.
Each defensive maneuver he made was not to set himself up for an attack, but to evade and lessen the damage inflicted on his body.
Jason tilted his head to the side, lowering himself as he bent his right knee and extended his left leg deep, allowing the blade at his legs to miss by a few centimeters. Lethal precision disguised as movements.
The blade that traveled in a semi-circle was left unintended; But by intention.
It only moved because Jason let it.
These fighters weren't at the king tier. They were mid-tier Awakened at best. For the sake of Agnus's growth, he decided to let him fight his opponent, as his real combat experience was solely built upon beasts, and not humans.
If he killed the people in front of him too fast; The last one would try to flee.
The blade arrived at his shoulder just as a thick coat of mana blossomed to life as the Emperor commanded it to.
Blade struck mana, and the blade harmlessly stopped in momentum as if the mana shield was a thick layer of glue. Jason slashed his sword above him from left to right with a grotesque sound of flesh tearing following it.
"FUCK!" The man roared out, quickly retreating as his hand was cleanly severed. Crimson liquid poured from it in torrents, stopping for a second... then more spurted out.
The man who swept at Jason's legs quickly flipped his hand, raising it up into his upper thigh.
Jason swept his left leg around, his weight placed on the balls of his right feet as he pivoted, the blade cutting into the air behind him.
The blade stuck in his mana broke out, the man quickly lashing forward at Jason's arm mid-spin. A blade blocked the attack; Jason's left arm reached above his shoulder, and his blade pointed down. He didn't need to look.
They were trained; But not experienced. Jason could read each move they were going to make and block them with his eyes closed if he chose to.
He drove upward with his blade as he quickly curved his trajectory downward into the chest of the man, who could only stand there stupefied, as Jason's sword tore through his chest, leaving a long scar down to his stomach.
Innards fell from the wound, a mix of blood and guts plopping on the floor as he stumbled down, collapsing on his own organs.
Jason's body naturally tilted where the only assailant he hadn't injured yet was positioned.
The offset in his body weight from such a difficult maneuver caused him to naturally sway left as the man's blade quickly slashed from side-to-side.
Jason let his blade hang horizontally below the attack as the perfect moment to defend it slowly came.
Just as the blade of his attacker entered the area, Jason pulled down with his left hand, which was under his left, as his other hand did the opposite.
The simple action caused his blade to lift up and powerfully slam the flat of it into his opponents, simultaneously drawing his arms in a line across his own body until he was in a perfect position to stab forward, his blade sinking through the man's shoulder until it dug through the wall, pinning him into it.
Handless-man stepped forward, his sword grasped in his non-dominant hand as it swung forward, weak and wild.
Jason simply ducked under it and raised his hands, one grabbing the other man's wrist, the other smacking against his elbow joint.
CRRRCK!
His grip faltered as his elbow protruded at the complete opposite angle it was supposed to, his sword dropping to the ground as fast as his life was extinguished, as Jason quickly sent the back of his fist into the man's throat, crushing it instantly.
Brutal, efficient, and flawless.
Each movement smoothly flowed into the other, with no awkward gaps in between. A battle technique woven into a brutal mix of offense and counterattacks. Not from a book, but accounting for the thousands of battles a single man took.
Not Jason.
Lorus.
Jason vowed to never use his own style, even if it benefited him more in a battle.
Each kill from this moment on was for the sole purpose of avenging Lorus, and he'd use the same swordsmanship Lorus taught him to strike his opponents to their graves.
He released a deep breath as his ears picked up the sounds of the battle behind him.
Jason watched from his peripheral view as he effortlessly killed two men, purposefully leaving one alive.
'Time to end it now.'
The man in front of him stabbed forward, and Agnus swiftly stepped to his side, the attack harmlessly whistling by his head. Agnus slashed forward, and the man quickly brought the leg closest to Agnus behind him to help his body reposition, in turn making a defensive move more comfortable.
Agnus expected this.
His sword danced as it relentlessly struck against his opponent's guard, tremors running down his muscles as a slight gap opened up. Agnus struck true.
The prime point of the blade slipped past an inch-wide gap between his arms that held his sword, and a sensation of his organs being cut open caused him to go into shock immediately, dying a few seconds after.
"That's a job well done," Jason stated as his mind approved. He turned away to face the man who was still alive, clinging to the wall.
"Talk."