Yes, in a sense, Kaiser and Kirasaka Sayaka were indeed archenemies.
At least, that was the case during their time at High God's Forest.
Kirasaka Sayaka, a magus of the Lion King Agency, was a professional War Dancer.
The so-called War Dancer referred to a type of professional magus trained by the Lion King Agency, possessing the ability to manipulate life and death, skilled in curses and assassination, and also responsible for guarding VIPs or conducting infiltration missions—a very dangerous profession.
Due to the nature of their duties, War Dancer were more special than ordinary magi. Even during sleep, they would unconsciously cast powerful curses around themselves. If someone harboring ill intent touched them, that malice would be magnified several times and rebound upon the intruder, making the price far outweigh the gain.
The only people who could touch a War Dancer's body were those magi of equal or greater level, or those they inwardly recognized and permitted.
Kirasaka Sayaka was one of the War Dancer affiliated with the Lion King Agency. She was only half a year younger than Kaiser, yet she graduated from High God's Forest a full year earlier.
Four years ago, when Kaiser was taken in by the Lion King Agency and sent to High God's Forest, he was trained there as a student of the same age as Kirasaka Sayaka.
Because High God's Forest only admitted girls and had no male students at all, Kaiser's initial arrival led many of the girls to keep their distance. Some even openly expressed rejection and hostility toward him, adding quite a bit of trouble to his life.
Among these people, Kirasaka Sayaka was the one who most strongly rejected Kaiser and displayed the most obvious hostility.
She suffered from androphobia, extremely disliked men, and even refused to answer routine calls from male superiors during missions. If not for her outstanding abilities, she might not have even been able to graduate, let alone perform regular missions.
That alone was understandable—after all, her androphobia wasn't directed solely at Kaiser but toward all men. So at first, Kaiser didn't take her hostility seriously.
However, Kirasaka Sayaka had a junior who had been with her since she was eight, even closer than family—practically inseparable.
Sayaka cherished this junior deeply, doting on her as if she were her own sister. Her affection even went a bit beyond the bounds of normal friendship.
That junior was also someone quite special within High God's Forest. She rarely spoke to anyone, had a rather aloof personality, and always maintained a calm expression while excelling in mock battles and exams. Her results were unparalleled, earning her considerable popularity among the younger girls who admired her.
But Kaiser, through a chance encounter during a mock battle, discovered that she wasn't actually cold.
She didn't talk to others simply because she didn't know how to start a conversation.
She seemed aloof because Kirasaka Sayaka was always by her side, making it hard for others to approach her.
And she always appeared calm during mock battles and exams not because she was composed, but because she was nervous.
Kaiser discovered this during one of their mock combat sessions and casually offered a few comforting words, which earned him her thanks.
And then... Kaiser got targeted by Kirasaka Sayaka.
Being androphobic and already extremely hostile toward men, Sayaka went ballistic upon discovering that her most beloved junior and roommate had interacted with Kaiser.
Especially in the following years, as Kaiser and that junior grew closer, Sayaka's dislike for him only intensified.
And since Kaiser was deliberately being targeted, he had no reason to passively endure it—he retaliated decisively, leading to their relationship becoming increasingly hostile.
Just like that, the two became bona fide archenemies, often giving their mutual acquaintance quite a headache.
Though this was part of the background story, Kaiser felt as if he had truly lived it. It didn't feel like a fabricated memory at all.
After all, a fantasy world was born from someone's imagination. The background life Kaiser drew was the same. When he entered this world with that background, the world began to manifest as reality, and that background became a real part of the past.
It felt to Kaiser as though he had genuinely experienced all of that in this world. Only upon entering the fantasy world did his memories and powers beyond the background awaken, as if recalling a former life.
With that in mind, when he encountered Kirasaka Sayaka, he felt no unfamiliarity—on the contrary, he naturally squared off against her, just like back when they were in High God's Forest.
The only difference was that, thanks to his familiarity with the original work, dealing with this man-hating woman had become much easier for Kaiser.
As a result, Kirasaka Sayaka was utterly and flamboyantly provoked.
"You bastard, people like you deserve divine punishment!"
Sayaka raised the blade she had been gripping the whole time.
It was a sword about 120 centimeters long, made of smooth metallic surfaces. Its shape resembled a fighter jet's main wing, with straight joint patterns forming ornate markings—a silver greatsword, thick and sharp.
Seeing this somewhat familiar silver two-handed sword, Kaiser raised an eyebrow.
"Heavy Demon-Purging Bow Type Six…"
That's right.
This silver greatsword was the sword form of the Heavy Demon-Purging Bow Type Six.
As a top student and powerful War Dancer at High God's Forest, Sayaka was granted this Divine Weapon by the Lion King Agency, becoming its wielder and user.
Its official name was—"Lustrous Scale."
"Come to think of it, you also got a Divine Weapon recently, didn't you?" Sayaka recalled the intel she'd received not long ago. "Hundred-Type Heavy Armament: Demon Purging Blade, official name 'Silver Radiance Qilin'—a specialized modified version of my Lustrous Scale, mainly upgraded in sword form, right?"
"Even though it's supposed to be an upgrade, that weapon sure looks unimpressive."
Sayaka glanced at the silver short blade in Kaiser's hand and mocked him, as expected.
"That's only one part of Silver Radiance Qilin," Kaiser said, hinting, "Against you, this much should be enough."
"What did you say?" Sayaka was instantly infuriated and shouted, "Don't underestimate me! I'll show you my power right now!"
Saying that, she kicked off the ground and dashed toward Kaiser like the wind.
Though the two-handed sword seemed far too large for her petite frame, her speed wasn't affected in the slightest. In a flash, she closed the distance and swung the silver blade to launch her attack.
"Swish!" "Swish!" "Swish!"…
The sound of slicing wind echoed as the silver greatsword slashed repeatedly, each arc gleaming coldly as it targeted Kaiser's body.
Naturally, Kaiser didn't ignore the attacks from Lustrous Scale.
After all, this was the sword form of the Six-Type Heavy Armament, inscribed with a pseudo space-severing formula—its blade capable of cutting spatial connections. No matter how tough one's body was, it wouldn't withstand a cut that could even slice space.
In a sense, this was a magic sword that could bypass defenses. Judging solely by its ability, it wasn't inferior to Doni's Authority of the Magic Sword.
Of course, that was only true if the wielder could actually hit the enemy.
Doni possessed divine-tier swordsmanship and could use his Magic Sword to slay gods.
Compared to Doni, Sayaka's swordsmanship was far inferior.
Kaiser shifted his steps lightly, evading each of Sayaka's slashes with minimal movement.
"Damn it! Stop dodging!"
"Uh… only an idiot wouldn't dodge, right?"
"Stupid men deserve to be cut down!"
"And someone who sneaks into her friend's bed to smell her scent is the real freak here. Don't think I don't know—when Yukina's not in the dorm, you've crawled into her bed more than once, haven't you?"
"What?! Y-y-you… how do you know that?!"
"Because Yukina told me. She said she sometimes found your scent in her bed. I figured it out right away, you girl-loving pervert!"
"I-I'm not a girl-lover! I just like Yukina!"
"That's even worse. Lesbian freak."
"Shut up!"
"Yuri girl."
"SHUT UP AHHHHHHHH!"
While dodging, Kaiser kept verbally provoking Sayaka, effortlessly making her lose her composure. Her originally elegant, dance-like swordsmanship became completely disordered.
"Clang!"
Kaiser seized the opportunity, swung his silver short blade, and deflected the incoming silver greatsword. He then swiftly closed the distance and darted into Sayaka's arms.
"Bang!"
A powerful palm strike landed on Sayaka's sword-wielding wrist, making her release her grip on the silver greatsword.
"Crap…?!"
Sayaka's expression changed.
Then she felt her foot get swept, her entire body lifting into the air. Her collar was firmly grabbed by a hand and viciously flung toward the ground.
"Thud!"
With a dull crash, Sayaka hit the ground hard, back first.
"Ugh…!"
The intense impact forced the air from her lungs, eliciting a pained groan.
"Swish swish swish…"
At that moment, several silver short blades appeared above Sayaka, falling straight down.
They pierced the clothing around her outline, pinning her to the ground.
"It's over."
Kaiser looked down at the fallen Sayaka and declared casually.
"You…"
Sayaka's expression changed again and again, utterly unable to remain calm.