Normal POV
"Why am I not surprised to see you still kicking around old timer," Cu chuckled spinning his spear while Logan smirked "well technical immortality and all," he replied gesturing to himself causing Cu to scowl a bit "tch of course how could I forget your bullshit of a healing factor I knew it could always heal you back in a instant but to this extent damn it must suck being alive for this long," Cu replied with a hint of sympathy.
Logan sighed "yeah you wouldn't know the half of it...so how are you here like this," he said making Cu sigh "well long story short I died and became a heroic spirit that ascended upon the throne of hero's a place where only those who have renowned fame or legend can ascend to in this case my legend as the hound of ulster was recorded down...damn it I'd like to explain more but it seems my shitty master wants me to finish up here to go deal with the boy sorry about this," Cu said in an apologetic tone.
Logan eye's narrowed slightly as he settled himself into a crouch "yeah well just so you know I am not about to let you casually murder someone much less a civilian," he replied causing Cu to let out a slight battle maniac like smile "well let's see if you haven't gotten rusty since we last sparred old man!" he then rushed towards him.
"Heh...let's fucking go," Logan growled out charging right after Cu.
Crimson spear met indestructible claws, sending a spray of sparks into the air as the two warriors collided with a force that shook the ground beneath them. Logan's low growl rumbled in his chest as his adamantium claws scraped against Cú Chulainn's spear. The clash was fierce raw power emanating from both as they pushed against each other, neither giving an inch.
Logan pulled back first using the momentum to twist his body. One arm braced against the spear keeping Cú's weapon at bay while the other flashed out in a vicious swipe aimed at Cú's midsection. The adamantium claws sliced through the air aiming to carve deep into flesh.
However, Cu was quick enough to pull back from the deadlock dodging the incoming blow. Cú landed gracefully, spear twirling in his hands as he grinned "I see you've still got that killer instinct," he said rolling his neck to loosen the tension.
Logan narrowed his eyes his nostrils flaring as he stood upright, circling his opponent like a wolf sizing up its prey "yeah I could say the same for you...but you're still a million years to early in trying to fight me out of all our previous battle you only ever won 5 out of 1,000," he said with a teasing smile.
He then lunged forward again, his claws flashing like silver lightning aiming to land a series of brutal hits before Cú could fully recover.
Cú danced back evading the first few swipes with fluid movements his spear a blur as it parried Logan's strikes, but Logan was relentless pressing forward with a flurry of attacks slashes aimed at Cú's arms, his legs, his chest. Each attack was designed to maim or cripple, and despite Cú's skill Logan's speed and aggression were beginning to push him back.
A slash grazed Cú's side drawing blood, another clipped his shoulder, tearing through fabric and flesh. Cú winced but didn't falter, his eyes gleaming with the thrill of the fight "hah, you're faster than before," he admitted jumping back a bit to create some distance "but I'm not done yet."
Logan smirked, crouching low, preparing for his next move "bring it."
With a battle cry, Cú charged, his spear thrusting forward in a blinding series of strikes. Logan's claws flashed as he deflected each thrust, sparks erupting with every collision.
Finally, Cú saw an opening and thrust his spear toward Logan's chest, aiming to impale him. But Logan, quick as ever twisted his body letting the spear glance off his adamantium skeleton. Using the momentum, he brought his claws up and slashed across Cú's torso the deadly blades tearing through flesh and armor alike.
Cú hissed in pain, blood spilling from the deep gashes, but he didn't slow down. Instead, he laughed a wild feral sound "that's more like it!" he roared leaping back to put some distance between them. He twirled Gáe Bolg once more the spear still gleaming despite the blood staining its tip.
Logan stood his ground, breathing heavily but unyielding "you ready to call it quits or do I have to take that spear off your hands?" he growled, flexing his claws.
Cú wiped a smear of blood from his mouth, grinning through the pain "I wouldn't dream of stopping now," he replied eyes blazing with the thrill of the fight.
Logan lunged at Cú, his claws aimed directly at his chest but at the last second Cú pivoted to the side, leaving Logan's claws slicing through the empty air and in that same movement, he brought Gáe Bolg low sweeping the spear beneath Logan's legs in a spinning arc.
Logan's eyes widened as the crimson spear connected with the back of his knees, knocking him off balance. He let out a grunt as he tumbled to the ground rolling to regain his footing—but that split-second was all Cú needed.
Before Logan could react, Cú spun on his heel and slammed the blunt end of Gáe Bolg into Logan's chest, the force of the blow knocking the wind from his lungs. Logan staggered, forced to his knees by the impact.
"Gotcha, old man," Cú whispered with a smirk stepping back just as Logan clawed at the ground, trying to get his bearings.
Logan growled, already pulling himself up to his feet, his healing factor quickly mending the damage, but Cú wasn't sticking around.
With a burst of speed, Cú bolted past Logan, jumping out the school window straight down towards where the still running Shirou could be seen.
"Fuck!" Logan cursed, his eyes narrowing as he forced himself to his feet jumping out the same window and running after Cú with all the speed he could muster. His healing had also kicked in fixing all the wounds he attained from the jump out the window but he was used to such pain and focused his attention on Cu trying to get there in time.
However, even Logan, as fast as he was couldn't catch up to the spear-wielding Heroic Spirit. Cú closed the distance in seconds, his spear already raised and ready for the kill.
Logan's shout rang out through the air "SETENTA, NO!"
It was too late with a single fluid motion, Cú Chulainn plunged Gáe Bolg into the Shirou's back and through his chest sealing his fate. Shirou let out a choking gasp his body going limp as blood pooled around the spear.
Cú glanced back at Logan, his eyes dark, but a flicker of remorse crossed his face "sorry, old man orders are orders," he said with bitterness before vanishing away
Logan's fists clenched, his claws retracted as he stopped in his tracks staring at the lifeless body of his (favorite) student (not that he would ever admit it). His chest heaved with a mix of fury and sorrow the scene fueling the anger boiling beneath the surface.
Suddenly he perked up as a familiar scent of rich coconut entered his nose "ehh Logan-sensei?!" came the voice of Rin Tohsaka "Rin?" he asked back in a cautious tone seeing yet another one of his students.
-end of chapter six-
next chapter Rin explains somethings to Logan who also explains somethings to her before reviving Shirou with her red gem, then Logan takes him back to his house, while Rin goes back to her place only to realize that Lancer will figure that he's still alive.