The afternoon sun slowly migrates across the bedroom floor, shifting the golden stripes of light up the wall until the room settles into the cool, muted shades of twilight.

Kanzaki wakes up first. He blinks groarily, staring at the ceiling as his mind slowly reboots. His body still feels remarkably heavy, but the bone-deep, hollow exhaustion from earlier has faded into a comfortable, lazy soreness. His incubus core is quiet, resting in a dormant state while it slowly begins the long process of regenerating its reserves.

He shifts slightly, realizing Mari is still dead to the world beside him. She has migrated during the night, her head now resting squarely in the crook of his neck, one of her arms thrown possessively over his chest. Her breathing is deep and perfectly even. Without the constant tension of fighting her inner hunger, her features look softer, younger, and completely at peace.

Kanzaki smiles faintly, careful not to move too much and wake her. He looks past her toward the bedside table, where his smartphone sits. He reaches out with his free arm, wincing slightly as his shoulder protests the movement, and taps the screen to check the time.

7:14 PM.

A notification from his mother pops up on the lock screen: “Running errands late, honey! Left some curry in the fridge for dinner. Make sure you eat!”

Kanzaki lets out a silent sigh of relief. The last thing he needed was his mom walking into the house while the place still smelled faintly of chaotic demonic pheromones and spilled essence.

"Mmm..." Mari stirs, the sudden movement of his chest disturbing her. She rubs her face against his collarbone, her eyelashes fluttering open to reveal pupils that are still a soft, relaxed crimson before they quickly adjust back to her human dark brown. She blinks up at him, her voice thick with sleep. "What time is it?"

"Past dinner time," Kanzaki whispers, his voice dry. He slides his hand up to gently ruffle her messy hair. "My mom's gonna be out late, so the coast is clear. How are you feeling?"

Mari sits up slowly, stretching her arms above her head with a cat-like grace. A tiny, satisfied sigh escapes her lips. "Incredible. Usually, when I wake up from a nap, the thirst hits me immediately. But right now? Nothing. Just... completely normal. And a little hungry for actual food."

"Perfect. Because we have a mountain of laundry to do before my mom gets back," Kanzaki grunts, sitting up and gesturing to the heavily stained, stiffening bedsheets beneath them.

Mari looks down at the sheets, her face instantly exploding into a vibrant, high-school-girl blush as the vivid memories of what they did on this bed come rushing back in full detail.

"Oh god," she mumbles, covering her face with her hands. "It's... it's everywhere."

Kanzaki chuckles, sliding out of bed and grabbing a clean pair of sweatpants from his dresser. "Hey, you're the one who asked to be flooded, succubus. Come on, help me strip the bed. Then I'll heat up some curry, and we can figure out what our 'tutor schedule' looks like for next week."

Mari peeks through her fingers, her face still burning a bright crimson as Kanzaki nonchalantly tosses her the oversized sweater from the floor. She quickly pulls it back over her head, the soft fabric swallowing her petite frame once again now that her exaggerated, hyper-endowed curves have completely settled back to normal.

"Shut up," she mutters playfully, though there’s no real heat behind it. She slides off the bed, her bare feet hitting the cool floorboards, and grabs one corner of the drenching, ruined bedsheet. "I was... overwhelmed. You can't blame a girl for losing her mind a little when you're emitting enough raw energy to power a small country."

"Hey, I'm not complaining," Kanzaki grins, ripping the sheets off the mattress with practiced efficiency. He bundles the evidence into a tight ball, making sure none of the thick, lingering fluid drips onto the carpet. "But if my mom finds out I'm doing heavy laundry at eight o'clock on a Saturday night, she’s going to assume I either ruined a bed or joined a cult. Honestly, explaining a demonic cult might be easier."

Mari lets out a melodious laugh, the sound bright and entirely free of the heavy, dark weariness that used to cloud her eyes. She follows him out into the quiet hallway, helping him carry the load down to the washing machine in the utility room. Together, they cram the sheets inside, Kanzaki dumping a double measure of scented detergent into the tray to mask any residual, sweet-scented pheromones.

As the machine thrums alive, filling the small room with a steady, comforting vibration, Kanzaki leads the way into the kitchen. The mundane scent of instant curry being zapped in the microwave quickly replaces the last traces of their supernatural tryst, bringing them firmly back to reality.

They sit side-by-side at the small kitchen island, eating straight out of the bowls in comfortable, domestic silence. The heavy weight of secrecy still hangs over them, but it’s no longer a burden—it’s a bond.

"So," Mari says between bites, her eyes tracking Kanzaki as he lazily twirls his spoon. "Monday morning. Back to the grind. Are we going to act like completely normal classmates again?"

"Of course," Kanzaki says, a sharp, familiar smirk returning to his lips. "Can't have Mr. Sato getting suspicious. But... if you find yourself feeling a little dizzy during third period again..." He leans in slightly, his voice dropping to a low, wicked murmur. "...the key to the old gym storage room is still hidden behind the fire extinguisher."

Mari smiles, a dangerous, beautiful glint flashing in her dark eyes. "I'll keep that in mind, Mr. Tutor."

Monday morning arrives with the familiar, crisp chime of the school's PA system, signaling the start of homeroom. The weekend's intense, secret sanctuary dissolves back into the bustling reality of teenage life.

Classroom 2-B is alive with its usual morning energy—boys slamming desks together to compare mobile game ranks, girls chatting loudly about weekend shopping trips, and the monotonous rustle of printouts being passed down the rows.

Kanzaki sits at his desk near the back window, his chin resting lazily in his palm as he stares out at the courtyard. His uniform is perfectly straight today, his tie neatly knotted for once, though his eyes still carry that trademark look of casual boredom. On the surface, he is completely unbothered. Internally, his incubus core is resting in a state of quiet, stable hibernation, ticking over like an engine running smoothly on a full tank.

A shadow falls over his desk.

"Good morning, Kanzaki."

He blinks and looks up. Mari is standing there, holding a stack of reference printouts for the upcoming midterms. Her fiery hair is brushed neatly into its standard high school style, and her uniform is pristine. To any casual observer, she looks entirely normal, perhaps a bit pale, but her eyes are a deep, clear brown—no trace of the glowing crimson or the desperate, hollow hunger that had consumed her just days before.

But as she sets a copy of the printout onto his desk, her fingers brush against his with deliberate, lingering slowness.

"Morning, Mari," Kanzaki replies, his voice smooth and casual. "Thanks for the printouts. Did you actually manage to study this weekend?"

"A bit," Mari says, a tiny, almost imperceptible smile tugging at the corner of her lips. She leans in just a fraction of an inch, her voice dropping below the classroom din so only he can hear. "I found myself feeling incredibly focused. No distractions at all. It was the most productive weekend I've had in months."

"Glad to hear it," Kanzaki murmurs, his own crimson eyes flashing with a brief, hidden spark of amusement. "Consistency is key when it comes to... tough subjects."

"Of course," she replies softly. Before she turns to walk back to her seat, her gaze drifts toward the front corridor where the old gymnasium hallway lies. Her dark eyes hold a playful, wicked glint. "I'll let you know if I need any more remedial help this week."

Kanzaki watches her walk away, her steps light and full of a quiet confidence she didn't have before. He leans back in his chair, a slow smirk spreading across his face as Mr. Sato slides the front door open to start the day. The ordinary school routine would go on, completely oblivious to the two predators hiding in plain sight—and Kanzaki knew that whenever the mundane world got a little too quiet, the key behind the fire extinguisher was waiting.

The morning classes pass in a blur of scratching chalk, rustling papers, and the rhythmic drone of teachers' voices. To the rest of the class, Kanzaki and Mari are just two students focused on their upcoming midterms. But beneath the desks, the invisible, electric awareness of their shared secret keeps them both hyper-alert.

Every time Mari stands up to answer a question or walks to the front of the room, Kanzaki tracks her movements with a lazy, protective gaze. He can see the subtle shift in her posture—the rigid, defensive tension she used to carry to hide her hunger is entirely gone. She moves with a fluid, effortless grace that makes his inner incubus purr with satisfaction. He did that. He stabilized her.

By the time the lunch bell rings, the classroom erupts into its usual chaotic scramble for convenience store bread and bento boxes.

"Hey, Kanzaki! Heading to the rooftop?" one of his friends asks, slinging an arm over his shoulder.

"You guys go ahead," Kanzaki replies, offering a relaxed smile as he pats his pocket. "Left my notebook in the library locker on Friday. Gotta go grab it before next period."

"Man, always losing stuff. See ya up there!"

As the classroom empties out, Kanzaki waits a beat before slipping out the back door. He doesn't head toward the library. Instead, his feet take him down the quiet, less-frequented corridor leading to the old gymnasium. The air grows cooler here, away from the crowded main building, smelling of old wood and wax.

He reaches the heavy fire door at the end of the hall. Standing right next to the red fire extinguisher casing is Mari. She’s leaning against the wall, her arms crossed over her chest, waiting for him with a look of quiet anticipation.

"You're late, tutor," she teases softly as he approaches, her eyes flashing a brief, hidden shade of crimson in the dim hallway light.

"Had to shake the guys," Kanzaki chuckles, reaching behind the metal extinguisher bracket. His fingers wrap around the cold, brass key hidden in the shadows. He pulls it out and unlocks the heavy storage room door with a soft click.

He pushes the door open, stepping into the familiar twilight of the room filled with stacked vaulting horses and rolled-up gym mats. He turns back to her, a slow, wicked smirk spreading across his face as he holds the door open.

"After you, Mari. Let's see how much you remember from over the weekend."

Mari slides past him into the dimly lit storage room, the heavy wooden door clicking shut behind them and cutting off the distant, muffled sounds of the bustling lunch hour. The familiar scent of dust, canvas mats, and old wax hangs in the air, but the moment the lock engages, it is instantly overwritten by the sudden, heavy flare of their awakening auras.

Away from the prying eyes of the hallway, Mari’s public persona vanishes completely. She turns around, leaning her back against the door as she lets out a long, shaky breath she’d been holding all morning. Her human-brown eyes instantly bleed into that deep, intoxicating crimson, glowing softly in the twilight of the room.

"I didn't think I'd need to come back here so soon," she confesses, her voice dropping to a breathless whisper. She rests a hand against her chest, where her heart is already starting to thump a little harder. "My core is perfectly stable, Kanzaki. The hunger isn't hurting me today. But being near you all morning... sitting just a few desks away... it's like a constant temptation."

Kanzaki slips the brass key into his pocket and steps closer, closing the distance between them until he's standing right in her personal space. He towers over her slightly, his own lazy expression melting into a sharp, dominant smirk. He reaches out, placing one hand flat against the door next to her head, effectively pinning her in place.

"That's the nature of the bond we made on Saturday, Mari," he murmurs, his voice a low, smooth vibration that sends a shiver straight down her spine. "Your succubus half doesn't just crave my energy when you're starving anymore. It recognizes me. It knows exactly how good it feels to be filled up by an incubus."

He leans in close, his breath brushing against the shell of her ear. "Just standing next to you, I can feel your spiritual frequency trying to lock onto mine. You're vibrating, little succubus."

Mari’s breath catches, her hands reaching out instinctively to grip the lapels of his school blazer. The raw, heavy warmth radiating from him is intoxicating, even through their layers of uniforms.

"Is it... is it bad that I want it even when I don't strictly need it to survive?" she asks, looking up at him with a mix of vulnerability and unadulterated desire.

"Bad?" Kanzaki chuckles darkly, his free hand sliding up to cup her jaw, his thumb tracing the soft line of her lip. "It means you're adapting perfectly. A real succubus doesn't just eat to live—she thrives on the pleasure of the exchange. And honestly..." His crimson eyes flare with a sudden, predatory heat as his own dormant pulse quickens. "...I've got plenty of energy to spare today. Let's see if we can do this without ruining another set of clothes before fifth period."

Mari lets out a soft, helpless moan as Kanzaki's hand cradles her jaw. Her hips instinctively tilt forward, pressing her pleated school skirt flat against his trousers. Even through the layers of fabric, she can feel the sudden, rigid heat of his awakening arousal pressing hard against her lower belly.

"Without ruining our clothes, huh?" she whispers breathlessly, her fingers trembling as she reaches down to untie her own school ribbon, letting it drop carelessly to the dusty floor. "That sounds like a challenge, tutor."

Kanzaki's smirk widens into something fierce and hungry. He doesn't waste another second. He grabs the hem of her pleated skirt, bunching the fabric up in his hands and lifting it all the way to her waist. Beneath it, her white cotton school panties are already turning translucent, thoroughly soaked through with a thick, sweet-scented cream that smells faintly of vanilla and ozone—the unmistakable pheromones of a succubus in heat.

"Look at you," Kanzaki rumbles, hook-fingering the elastic of her panties and dragging them down her thighs. "Five minutes into lunch, and you're already weeping for me. Your body remembers exactly what I did to you on Saturday."

Mari whimpers, lifting one leg and hooking her thigh securely around his hip to give him full access. Her exposed, dripping pink slit pulses in the dim light, practically begging for contact. Without the massive expansion from the weekend, her body is compact, tight, and hyper-sensitized.

Kanzaki reaches down, aggressively ripping open the zipper of his school slacks. His massive, thick cock springs free, already fully erect, veiny, and throbbing with a dark purple hue. The tip glitters with a heavy bead of pre-cum.

He grips her inner thigh, lifting her slightly off the ground against the storage room door. With a brutal, uncompromising upward thrust, he buries his entire length into her soaking, velvet depths in one single, smooth motion.

"AAAHHHN~!" Mari screams, her voice muffled as Kanzaki immediately smacks his hand over her mouth to keep her from alerting the entire hallway.

Her tight walls convulse violently around his massive girth, clamping down on his shaft with a desperate, white-hot suction. Her vision swims with absolute euphoria as his raw incubus energy floods her internal pathways, locking them together in a dizzying, supernatural circuit.

"Mphh... K-Kanzaki...!" she gurgles against his palm, her eyes rolled back as her hips begin to violently hitch against him, riding his cock with frantic, messy friction right there against the wooden door.

Kanzaki keeps his palm firmly locked over her mouth, his fingers digging into her cheek as her muffled, high-pitched cries vibrate against his skin. The storage room is filled with the frantic, wet friction of their bodies colliding, a heavy, rhythmic slap-slap-slap echoing off the stacked vaulting horses and canvas mats.

"Quiet," Kanzaki growls near her ear, his teeth bared in a fierce grimace of pleasure. "Unless you want the whole track team walking in on us."

The warning only seems to push Mari further over the edge. Her petite frame trembles violently as she clings to his shoulders, her single hooked leg squeezing his waist with supernatural strength. Her tight, velvety walls grip his thick shaft like a vice, pulsing in rapid, uncoordinated spasms that threaten to break his legendary restraint in seconds. Her succubus core is wide open, drinking down the raw, electric aura radiating off his skin like a sponge.

Squelch! Squelch! Squelch!

Kanzaki doesn't hold back. Standing flat on his feet, he uses the door behind her as an anchor, hammering his hips upward with short, brutal, devastating thrusts. Every strike bottoms out completely, his heavy balls smacking against her soaking clit and spraying hot beads of pre-cum and slick arousal down his thighs and into the folds of her bunched-up skirt.

"Mmph—! Mmm-nngh!" Mari’s eyes roll back, the intense, localized friction hitting her sweet spot with laser precision. She arches her back off the door, her fingers clawing desperately into the fabric of his blazer.

He can feel the exact moment her body gives out. Her internal walls suddenly tighten to an impossible degree, convulsing in a crushing, continuous climax that milks him ruthlessly. The sheer, overwhelming suction triggers his own boiling core.

"Fuck, Mari—I'm dropping it!" Kanzaki rumbles, his voice cracking.

He drives himself in one last time, pinning her body hard against the wood. His veins bulge along his neck as his cock throbs violently inside her, unleashing a thick, pressurized torrent of boiling-hot incubus seed straight into her pulsing womb.

Mari's muffled scream is swallowed by his hand, her entire body locking up into a rigid, shivering line as she takes the full, heavy blast of his essence right in the middle of the school day.