The Eminence in Shadow: Master of Garden: Main Quest Ch.25: Night Of Farewell

First time reading the Shadow vs Alpha hit me right in the feels.
From the Magna:
...HM? Is That... Delta!?
I see.. Heh Heh... they had enough of waiting around and want to solve this with brute force. And with her sense of smell, she'll easily sniff through my disguise.
Or she would! But I of couse, came prepared!
I knew this might happen, so I took a good deep bath then doused myself in all the prefume!!
Here I come my sweet Assasin!!!
TMP TMP
Ah!
Who's there!?
MY NAME IS JOHN SMITH.
HARBINGER OF REBIRTH... DESTROYER OF ALL.
...!
DMP DMP DMP
BWISH
Boss-man!!! Whatcha doing here?!
(Curses! foild again!! *Inner monologue*)
Looks like I underestimated your nose.
Boss, did you just say John Smith?! Wait John Smith was the boss-man all along?!
From the Web Novel: Shadows and Alphas encounter
“……I see. You still don’t know how strong I’ve become, right?”
Raging magic power swirled and converged onto Alpha.
“I will not be a burden to you forever. If you say you will not talk, no matter what, then--- I will just have to use my power and force it out of you.”
Suddenly-Alpha’s figure disappeared.
John Smith’s face is colored in surprise for the first time.
Her raging magic power, her jet-black sword, her body--Every sign that indicated she was there before, beautifully disappeared.
What was left is only a red mist.
In the next moment, Alpha emerged from the red mist and cut at John Smith from behind.
With that reddish black sword.
John Smith looked back and tried to dodge with minimal movement like before.
Yes, like before.
“---!?”
There was a thin red line on John Smith’s cheek.
The reddish black sword suddenly grew longer.
“This sword is a mixture of my blood and slime that increase my strength and control over it. Its form can be freely changed while maintaining its strength. It is one of the results born from Eta’s demon possession research. How is it, surprised?”
John Smith honestly nodded at Alpha’s proud statement.
“Indeed I am, the research and its results application is truly great.”
“Do you want to have an honest talk now?”
“No, absolutely not.”
Alpha’s eyes sharpened.
“Then I will come at you with my full power.”
Alpha disappeared and a red mist took her place.
And almost at the same time, she reappeared and unleashed an attack on John Smith.
John Smith’s suit tore apart.
Blood was smeared onto his white shirt.
When John Smith manipulated the strings to counter attack, Alpha had already disappeared into the red mist.
The next moment, another attack came at him from behind.
The speed at which she emerges from and re-enters the mist is extremely fast.
Ignore the Maai and one-sidedly attack, then unreasonably ignore the law of physics to avoid a counterattack.
Disappear, then reappear.
Appear, then disappear.
Red slashes attack John Smith incessantly from all sides.
John Smith’s suit was already torn to shreds.
He intentionally manipulated the strings to ward off fatal blows.
What he could do, is only to predict Alpha’s movement, and lay a trap of strings ahead of time.
“----!”
There is another tearing on his suit.
It seems like the red mist also acts as a sensory organ, because Alpha seemed to have completely grasped the location of his strings.
The trap was of no use.
It seemed like there was nothing John Smith could do.
“How about it? You ready to talk yet?”
A voice can be heard from somewhere within the red mist.
“No, absolutely not. It was an interesting trick though.”
His voice, somehow, felt like he was having fun.
“Trick… you say?”
“Normally, it would be bothersome to fight against, but if you carefully think about it, its mass is too small for a mist, right? So-”
John Smith took out an excessively long, jet black sword.
Then.
“--If I just blow it all away, then you can’t do anything, right?”
He swings his extra-long sword and caused an intense gust.
“---!”
Immediately after, the mist dissipated and Alpha’s figure reappeared.
“Correct. If you’d remained in the mist, you might’ve been blown away to the stratosphere.”
The clouds above them in the sky were beautifully blown away.
While Alpha tried to form a stance, a merciless blow struck her.
Her reddish black sword was blown away, and a jet-black sword came down at her.
“You’ve become strong.”
A strong pressure assaulted her, and her consciousness was shaken.
“Be relieved, it was just the back of the sword.”
Then, she hears his footsteps as he walks away.
She desperately extends her hand, despite her fading consciousness.
“Wa, Wait…..”
But he doesn’t stop.
Step by step, he walked away from her.
She’s always been chasing after his back.
Finally, she’d thought that she’d finally reached him.
Even so, why………..
“Please… don’t leave me behind…”
Her voice did not reach him.