The air in the sparring chamber hangs thick and still, heavy with the scent of old concrete and something metallic, like ozone. Krillin shifts his weight, the soles of his training boots scuffing on the rough floor. He watches 18. She stands perfectly centered, her arms loose at her sides, blonde hair a pale curtain against the dim light filtering from the single high window. Her expression is serene, almost vacant, yet something in her eyes holds him, pulling him in. He knows that look. It’s the quiet before the storm, the expectation that settles over her whenever they come here. His palms feel damp. He clenches them, then relaxes, trying to breathe evenly. This isn’t like fighting Frieza or Cell, where every instinct screams danger, where survival is the only objective. This is different. This is *her*. The woman he loves. The woman who, in this desolate room, asks him to hurt her. Not to harm, she insists, but to *feel*. To deliver an impact that resonates, that proves her own existence in a way her synthetic body sometimes denies. He remembers the first time she asked. A casual request, almost a dare, delivered with that same unreadable calm. He’d laughed, disbelieving, until he saw the flicker of something serious in her eyes, a strange, desperate hunger. Now, it’s a ritual. One he still doesn’t fully understand, one that still ties his stomach in knots. His mind races through a thousand defensive maneuvers, a lifetime of training to *avoid* striking with malicious intent, to pull his punches. But she doesn't want him to pull them. “Ready?” Her voice is soft, a low hum that barely disturbs the silence. It’s a question, but it’s also an instruction. Her eyes, those pale blue discs, fix on his, an invitation and a challenge all at once. There’s no fear in them, not a trace of it. Only that quiet anticipation. He sees a faint rise and fall of her chest, a barely perceptible breath. Is it even necessary for her? He never asks. He just watches, always watching for a sign, an instruction. He takes another slow, deep breath, trying to calm the frantic thrum of his pulse. His gaze falls to her midriff, the pale, smooth skin of her abdomen exposed beneath the cropped top of her uniform. No armor, no ki-shielding. Just her, vulnerable and unyielding. It’s a strange contradiction, one he grapples with every single time. He’s a warrior. He knows how to hit. But how do you hit the person you’d die to protect? He nods, a short, jerky movement. The tension in his shoulders tightens. He sees her lips curve upwards, a ghost of a smile, almost imperceptible. It’s a smile of satisfaction, of acknowledgment. As if she knows the battle he’s fighting, not against her, but against himself. The fight to deliver the blow she craves, while denying every protective instinct he possesses. He raises his guard, settling into his stance, the familiar comfort of the posture a small anchor in the strangeness of the moment. He waits for her next move, or her next word. Either way, the dance has begun. --- “Don’t hold back, Krillin.” Her voice cuts through the thrum of his apprehension, sharper now, though still quiet. It’s not a request anymore; it’s an order, delivered with the calm authority he’s come to associate with her most peculiar demands. “You always do. I can feel it.” His jaw tightens. She’s right, of course. He always does. Every fiber of his being rebels against the idea of truly hurting her. He sees the faint, knowing smirk on her lips, a slight tilt of her head. She knows his weakness, his inherent compassion, and in this chamber, she exploits it. Not cruelly, but with an almost scientific precision, pushing him to abandon his reservations. “I won’t,” he says, the words feeling inadequate even as they leave his mouth. He shifts his weight, planting his feet more firmly. He focuses on the emptiness of the space around her, trying to visualize a sparring dummy, a rock, anything but *her*. It’s a futile exercise. Her presence fills the room, demanding his full, undivided attention. Her power, even when dormant, hums beneath her skin, a low vibration he can almost sense. Her gaze sharpens. “Then show me. Show me what you show when you fight a true opponent.” She steps forward, one bare foot gliding soundlessly across the concrete. Her form remains open, exposed. “Don’t pretend I’m fragile. You know I’m not.” He knows. He’s seen her take blasts that would atomize mountains. He’s seen her stand unyielding against the strongest beings in the universe. But this isn’t about power levels. This is about intent. This is about his fist, his strength, connecting with her body. It’s intimate in a way that fighting normally isn’t, a strange, unsettling vulnerability that only seems to affect him. He exhales slowly, drawing ki, a golden aura shimmering faintly around him. The air crackles. The temperature in the chamber seems to rise. This is the power he taps into when the world is at stake. The power he usually reserves for villains, for threats to everything he holds dear. To unleash it against her feels…wrong. Deeply, fundamentally wrong. Yet, she watches him, her eyes tracking the building energy, a flicker of something almost like approval in their depths. “Come on, Krillin,” she urges, her voice a low murmur now, almost a purr. “I’m waiting.” Her arms remain down, her midriff offered up, a silent, unwavering target. He can feel the heat of his own ki, the power surging through his muscles. He tightens his stance, clenching his right fist, knuckles white. The familiar thrill of battle mixes with a sickening dread. He has to do this. For her. He takes a single, explosive step forward, committing to the strike, the first true blow of their twisted ritual. --- The punch connects with a sickening thud. It’s a solid hit, a focused strike, delivered with more power than he usually allows himself. Krillin feels the impact vibrate up his arm, a jarring sensation that jolts his shoulder. He pulls back instantly, his wrist aching from the sheer force. A wave of nausea washes over him, cold and sharp. His stomach clenches. He can almost feel the phantom pain in his own gut, imagining the brutal force he just unleashed. He watches her, his breath catching in his throat. Her body barely moves, a slight ripple across her abdomen, a momentary tensing of the muscles under his fist. She doesn't flinch. She doesn't gasp. Her eyes remain fixed on his, but for a split second, something shifts within them. A tiny, almost imperceptible flicker. Was it satisfaction? Recognition? He can’t quite tell. It's gone as quickly as it appeared, replaced by her usual placid expression. “Better,” she says, the single word hanging in the air, a faint echo. Her voice is level, devoid of any pain or discomfort. It makes his skin crawl. How can she just stand there? How can she absorb that without even a grunt? He tries to reconcile the woman standing before him with the human fragility he associates with such blows. He can't. The disconnect is a chasm. His arm still throbs, a dull ache that mirrors the unease in his chest. He can taste blood in his mouth, though he hasn't bitten his tongue. It's just the residual taste of his own adrenaline, the metallic tang of battle. But there's no glory here, no triumph, only this strange, unsettling ritual. He lowers his guard slightly, his shoulders slumping. He wants to stop. He wants to tell her he can't do this anymore. But then he remembers the look in her eyes, that yearning, that need to *feel*. He glances at her midriff again, searching for any mark, any bruise. Nothing. Not a single trace. Her skin is unblemished, smooth as polished stone. It’s a testament to her durability, her cyborg nature, and another reminder of the gulf between them. He can’t hurt her. Not really. Not in the way a punch should hurt. And that, he suspects, is the point. The impact, without the damage, a sensation without consequence. He forces himself to meet her gaze. He sees no malice, no challenge in her eyes now, just a quiet patience. She’s waiting for him. Waiting for him to push past his discomfort, to deliver what she truly craves. He raises his fists again, the familiar stance feeling heavy and wrong. The air around them feels charged, thick with unspoken expectations. He knows she wants more. He can feel it in the silence between them, in the way her gaze lingers, expectant. He has to push himself further. For her. --- “That wasn’t your full power.” Her voice is calm, a flat statement of fact, yet it carries the weight of a challenge. She doesn’t accuse him; she simply observes, her pale eyes unwavering. Krillin flinches, a muscle twitching in his jaw. She sees through him, always. His attempts to temper his strength, to hold back just enough to spare her, are transparent to her enhanced senses. He takes a step back, shaking out his right hand, the knuckles still stinging faintly. “I hit you hard, 18.” The words sound petulant, even to his own ears. He’s trying to defend himself, to justify his restraint. But there’s no room for justification here. Only the stark reality of her desire. Her lips curl in that faint, almost-smile. “Hard for *you* to hit. Not hard for *me* to feel.” She pushes off her back foot, gliding forward, closing the distance between them by another foot. Her stance is open, inviting. Her hands stay low, palms facing him, a gesture of absolute vulnerability, absolute trust. Or absolute provocation. “You want me to level a mountain?” he asks, a note of exasperation creeping into his voice. He gestures vaguely around the desolate chamber, the concrete walls scarred with old impacts from previous, less personal training sessions. “You know what that does.” “I know what *I* can take,” she counters, her gaze sharpening, locking onto his. “And I know you’re still holding back. You’re afraid.” The word hangs in the air, a blunt accusation. He feels the heat rise in his cheeks, a flush of shame and frustration. Of course he’s afraid. He’s afraid of what happens if he *doesn’t* hold back. He’s afraid of losing her, even in this strange, controlled way. “I’m not afraid,” he mutters, though his voice lacks conviction. He tries to project confidence, to tap into the warrior within him that doesn’t hesitate. But that warrior is struggling against the husband, the lover, the man who cherishes her. She shakes her head, a slow, deliberate movement. Her blonde hair sways. “Then prove it. Show me the strength you used against Perfect Cell.” Her eyes bore into his, demanding. “Show me the power you held when you thought Goku was gone. Don’t give me a half-hearted impact. Give me *everything*.” Her challenge resonates deep within him, touching a core of his being he rarely exposes. It’s a call to his pride as a martial artist, a dare to abandon the gentle hand he usually offers her. He feels the anger prickle, not at her, but at his own hesitation, his own inability to fully meet her strange need. He clenches his fists, the decision made. He will give her what she wants. He will silence the doubt in her eyes. He will hit her with everything he has. --- Krillin lets out a guttural roar, a sound torn from deep in his chest. His ki explodes outwards, forming a brilliant, golden aura that lights the dim chamber like a miniature sun. The floor beneath his feet cracks slightly under the sudden surge of power. He winds back his right arm, muscles coiling, veins bulging. Every ounce of his concentration, every shred of his warrior's instinct, funnels into this single, devastating strike. He ignores the scream of his own protective urges, the protest of his heart. She wants the truth of his power. He will give it. The punch flies, a blur of golden light and raw force. It's faster than anything he's thrown before in their sparring, honed by years of combat, fueled by her explicit demand. His knuckles, hard as iron, slam into her midriff with the force of a battering ram. The sound is like a thunderclap, a sharp, concussive report that echoes off the concrete walls, making the very air vibrate. This time, the impact isn't just a jarring thud up his arm. This time, he feels something yield beneath his fist, a momentary compression that seems to absorb the blow without a hint of resistance. His arm rebounds slightly, a recoil that feels different, less painful, more... elastic. He expects the residual ache, the cold wave of nausea, but they don't come. Instead, a strange emptiness settles in his chest, a hollow feeling of having delivered an impossible blow. He pulls his arm back, lowering his guard slowly, his breath coming in ragged gasps. The golden aura around him flickers, then fades, leaving the chamber once more in its dull, metallic gloom. He watches her, his eyes wide, searching for any sign of distress. Her body remains upright, perfectly still. No flinch, no stagger, not even a tremble. Her blonde hair is undisturbed. Her eyes are open, fixed on his, but the usual placid calm is gone. A new expression flickers across her features, something he has never seen before. Her lips part slightly. Her breath hitches, a quick, sharp intake that’s barely audible. He sees her eyes widen, just for a moment, and a subtle shiver traces down her spine, visible only to his trained eye. It’s not pain. It’s something else. Something utterly foreign. A sudden, unfamiliar jolt of pleasure, sharp and unsettling, flares through 18's core, making her question the true nature of her 'sensory cravings'.

Chapter 1: Echoes of Impact