I Took A Succubus's First Time

For the past few days leading up to the war, Kouhei and Kyouka had been burning every ounce of energy they had and they were wrecking their minds over every possible strategy they could think of.

They had no choice but to push themselves like this. The other side had some damn sharp tacticians too with people like Souichiro, whose cold, calculating mind was infamous, and Natsuya, who had a knack for dissecting strategies and twisting them in ways that could screw anyone over. Knowing that, it felt only natural—almost necessary—for Kouhei and Kyouka to go beyond their limits to come up with something that could keep them from getting crushed.

But there was a problem that weighed heavy on Kouhei. His mind kept getting tangled up with things that only made sense inside a game. His entire experience was rooted in game mechanics with things that might sound clever in theory but fell apart the moment they hit the grit and unpredictability of real combat. It was frustrating and almost humiliating, to realize how useless that knowledge felt right now. That was why he had to rely on Kyouka's battle-hardened experience to help fill in the gaps.

"Kyouka-sensei, I think it'd help if we launch the attack here first… and maybe if we could thin their group before the real fighting even starts," Kouhei suggested, voice steady but edged with a quiet tension.

The idea was simple.

That was to kill before the enemy even realizes they're under attack. Kouhei saw it as the first punch of the war, striking fast and quiet in the opening invasion phase.

They'd need to sneak someone inside, have them infiltrate the fortress on the other side, and silently take out anyone who might sound the alarm about enemy movement.

"Hmm… I see, that's actually a solid plan…" Kyouka replied, her gaze thoughtful.

In truth, what Kouhei suggested was a textbook invasion tactic. It was something so basic it was almost instinct to someone like her. But she didn't tell him that.

It was his first time ever trying to lay down a real battle strategy, and for someone that new, even thinking of that approach this early showed he was learning faster than most would.

"But, Okumura-kun… maybe it's time to stop calling me 'Kyouka-sensei,' don't you think?" she said softly, tilting her head slightly, hair shifting over her shoulder. "Right now, I'm not really your teacher anymore. We're fighting this war together as equals… or close to it, right?"

Ever since they started planning, Kouhei had stubbornly stuck to calling her 'sensei.' It was polite, sure, but it also felt oddly stiff, and to Kyouka, a bit out of place on the battlefield.

The only reason she'd even become his 'sensei' in the first place was because Yuuna had asked her to watch over him. That was what led Kyouka to step into the mundane world, get herself hired at the same school Kouhei went to, and quietly keep an eye on him from the shadows.

"Well, even if that's true… I think it'd feel weird to just stop calling you that all of a sudden," Kouhei confessed, scratching the back of his neck, his voice trailing into something quieter. "I'm too used to it by now. Besides… you're still teaching me so much about strategy, so it doesn't feel right to drop it. You're still my teacher in that sense… so it'd feel a bit too disrespectful if I just stopped."

"You're putting way too much respect on me," she murmured, trying to hide the flicker of something strange tightening in her chest.

"No… I think it's exactly the right amount of respect," Kouhei said, his gaze meeting hers, voice low but honest.

For a second, Kyouka felt her lips push into a pout before she even realized it, and when it hit her how childish that must look, she quickly shook her head, cheeks faintly warm, and turned away to hide it.

'What the hell was that?' she scolded herself silently.

A weird tug in her chest had caught her off guard, an unfamiliar heat that left her unsettled.

She couldn't even name what it was.

She would feel it again, she knew—but that was something to be told for another time.

***

For reasons she couldn't pin down, Kyouka's thoughts suddenly drifted back to Kouhei right then.

Maybe it was because right now, in the middle of this hellish fight, she couldn't help but worry about him.

They'd only spent a handful of days together, fighting side by side to plan, to map out every angle they could think of, but somehow, that was enough time for Kyouka to see him differently.

Watching his stubborn determination to save Yuuna—to push himself beyond what anyone would expect of him, even charging into a war he had no guarantee of surviving—was something she quietly found admirable.

At first, Kyouka hadn't known what to make of him. Her first impression had been of a boy who struggled to speak without awkward pauses as well as someone who seemed painfully unsuited for war. He didn't look anything like the figure from the story, the so-called Child of Anti-Prophecy, the human who was supposed to stand against fate itself.

She had pictured someone taller, someone whose very presence felt sharp and unyielding.

But slowly, day by day, she'd watched him change. His posture grew steadier. His words came out clearer and less tangled by nerves.

Sure, he still wasn't smooth when it came to talking to people—but the difference was there, plain as day.

It was almost surreal to remember how quiet and hesitant he'd been in the beginning, compared to the person he was becoming now.

And maybe that was why she respected him.

Even though they'd only had those few days together, spent hunched over maps and arguing over what plan would work best—they'd built a bond she hadn't expected.

And now, in this moment, her mind snapped back to reality, pulled harshly by the bloodlust in the air.

"Kukuku~ This is absolutely thrilling!" Satoshi's voice rasped, breath ragged, eyes lit with unhinged delight. "The idea that I get to slice up someone considered a war veteran… it makes me so fucking aroused! I can't wait to see your innards spill out and then to wrap them around my neck… it'd be pure bliss~!"

Kyouka's jaw tightened, eyes narrowing, her breath catching for a second.

He was so damn fast—it was maddening.

Every time she forced her battered body to move faster, Satoshi somehow moved even faster, as if mocking her effort.

And that was why, little by little, she was being pushed closer and closer to the edge.

However, she kept her breathing even, her heart drumming steady in her chest.

Panicking now would only throw her rhythm off—and that'd be the death of her.

"You really think you can slice my stomach open? I don't see it happening," she shot back, her voice cool, almost taunting. "Especially since you won't even try fighting me head-on."

"Oh? You think running your mouth like that is gonna throw me off?" Satoshi spat out, grin twisting wider, shadows flickering in his eyes. "For some so-called war veteran, that's a pretty weak-ass blow, don't you think?"

Kyouka let out a small, measured smile.

Because deep down, she already knew how to make him snap.

She and Kouhei had dug up all kinds of dirt on the Souichiro Faction's top brass—enough little details to twist the knife where it hurt. Sure, some bits were useless in the middle of combat, because they were nothing but quirks and petty insecurities. But sometimes, those petty cracks were exactly where you could wedge a blade.

And Satoshi had a crack so deep it practically begged to be split open.

The reports had been clear that just say the words, and Satoshi would lose it completely with him going blood-mad, tearing through friend and foe alike, blinded by the need to shred the one who insulted him. It was a dangerous gambit, especially since his strength surged when he was unhinged.

But that was what Kyouka wanted. Because once he threw away the slick dash–slice–dash rhythm he kept relying on, he'd come at her in a wild, clumsy rage—and in that rage, she'd see every flaw as well as every opening.

So she dropped her guard, just enough to make it sting, and let the words spill from her lips.

"I see… That sucks, huh? I really thought fighting you might be fun, but even though you're a clown, this isn't funny at all."

For the briefest beat, everything seemed to freeze.

"Huh…?" Satoshi's grin faltered, the corners of his mouth twitching, his pupils dilating like a beast scenting blood. "W-What… what the fuck did you just say…?" His voice trembled, an ugly crack in it, like a bone splitting under pressure.

"You're not fun to fight at all," Kyouka finished, her words sharp as the edge of her blade, her eyes locked unwaveringly onto his.

It hit him like a hammer to the skull.

The air rippled around them—hot, suffocating, drenched in raw killing intent so thick it pressed against Kyouka's skin, sinking down to her bones. Her breath caught in her chest for half a second as the bloodlust rolled over her.

"You're going to fucking die for not calling me funny!" Satoshi's voice tore free, ragged and crazed, eyes wide and unblinking, spit flying as his teeth clenched so hard they might've cracked.

And just like that, she knew she'd gouged right into the softest, ugliest part of him—the one thing he couldn't stand to hear, no matter what.

And that was him not being funny.