Is It Wrong for an Extra to Steal the Protagonist's Harem?

Chapter 99: The Fiancée’s Rules [18+]



The heavy iron latch of the Edelhart dorm bedroom clicked, locking them inside. Emma Arlon turned away from the door, walked straight to Alex's wooden desk, and set a single, bent button on the polished surface.

"Was Maya in your room at the Spire?" Emma asked. She didn't scream. Her voice was terrifyingly level, stripped of the frantic, chaotic energy that usually accompanied her jealousy.

Alex stood near the center of the room, wearing dark training trousers and an open, unbuttoned shirt. His bandaged right hand rested carefully at his side. The System's kinetic saturation gauge hovered just below twenty percent, finally stable after a day of intensive cooling. Downstairs, he could hear the faint sound of Lily organizing the parlor—deliberately staying away, giving them the space they needed.

"Yes," Alex said. He didn't lie, and he didn't deflect.

Emma's mana flared, a sudden, sharp pressure in the air that rattled the glass water pitcher on the desk. Alex stepped forward. He placed his uninjured left hand on her shoulder, pressing gently but firmly until she sat down on the edge of the mattress. He stepped between her knees, looking down into her eyes.

"You are my fiancée, Emma," Alex said, his voice calm but absolute. "But you do not own my choices. And you will not attack women I have accepted."

Emma looked up at him, her chest rising and falling rapidly. The anger in her eyes cracked, revealing the raw, unpolished terror underneath. "I am not afraid of sharing your body, Alex. I am afraid of being replaced. Of being abandoned again, just like before."

"I will not promise exclusivity that I cannot keep," Alex said, refusing to offer her a comfortable lie. "But I offer you honesty. I offer you a public future as my Duchess, and a voice in the decisions of this household. If that is not enough for you, you have the choice to leave this engagement right now."

"No," Emma answered immediately. Her fingers reached out, gripping the denim fabric of his trousers. She understood the terms now. She was choosing them.

Emma reached into her uniform pocket. She pulled out a small glass vial containing the female equivalent of the alchemical contraceptive tonic Lily had procured from the infirmary. She uncorked it, drank it in one swift motion, and set the empty vial on the nightstand. Alex had already taken the male dose that morning.

"Then show me," Emma whispered, looking up at him, her tone softening into a desperate demand. "Show me the difference between pacifying a jealous girl and reassuring your fiancée."

Emma reached up and slowly unfastened the remaining buttons of his open shirt. She leaned forward, pressing a soft, lingering kiss against the white bandages on his right hand, before rising slightly to kiss his mouth. Her lips were warm, tasting faintly of the bitter alchemical tonic.

She took his uninjured left hand and guided it beneath her academy blouse, pressing his palm firmly over the lace of her bra and the soft, heavy weight of her breast. The heat of her skin radiated against his fingers. Emma pulled back just enough to pull her blouse over her head, unhooking her bra and tossing both garments onto the wooden chair beside the desk.

Alex shifted backward, sitting against the solid wooden headboard of the bed with his legs stretched out. Emma stood up. She unfastened her uniform skirt, letting it fall to the floor, and hooked her thumbs into the waistband of her underwear, sliding the silk down her legs. She left the garments in a pile at the foot of the bed.

She climbed onto the mattress, swinging a bare leg over his hips and settling onto his lap. The slick, wet heat of her vulva pressed directly against his trousers. She reached between them, unfastening his belt and pulling his trousers and underwear down past his hips, freeing his thick, semi-erect cock.

Emma gripped his shaft, the friction of her soft palm hot and firm. She guided the broad head against her wet cleft, rubbing herself along his length to spread her own lubrication. She let out a sharp, trembling breath as she sank down, taking him fully inside her inner walls.

Because of his heat fractures and the lingering tenderness in his core, Emma set a slow, deliberate riding rhythm. The mattress springs creaked softly with each downward press of her hips. Alex rested his head against the wood, his uninjured left hand moving down to stimulate her clitoris with slow, steady circles of his thumb.

"You are courageous, Emma," Alex murmured, his voice a low vibration against her chest. "You are the one holding the political lines for this family. You are useful, and you are mine."

The praise made her breath catch. Her hips snapped down harder, her wet inner walls clenching tightly around his thick shaft.

"I am," Emma gasped, her nails digging into his bare shoulders. "I am better than her. Maya is just a commoner, Alex. I could ruin her if she tries to take—"

Alex's left hand immediately seized her hip, locking her in place. The friction stopped instantly. Emma gasped, her eyes flying open in shock.

"No threats," Alex said, his voice dropping into a cold, commanding register. He held her hips perfectly still, refusing to let her move. "What is the new boundary?"

Emma shivered, her body desperate to resume the deep friction, but she met his dark gaze. "No attacking the others. I claim my own place."

"Good," Alex said, releasing his grip on her hip.

Emma resumed riding, but the rhythm changed. It became deeper, faster, and intensely possessive in a way that focused entirely on drawing pleasure from him rather than tearing someone else down. The wet slapping sound of their bodies meeting filled the quiet room. Sweat gathered on her collarbones, her bare breasts swaying heavily with each thrust.

Her breathing turned into rapid, broken moans. "Alex—please—"

Emma orgasmed with a loud cry, her inner walls spasming violently around his cock, milking him with intense, hot pressure.

As her climax rolled through her, Alex gripped her waist. Carefully, avoiding any weight on his burned right palm, he turned her over onto her back against the mattress. He settled between her thighs and drove into her with a series of short, forceful thrusts.

"I'm close," Alex warned, his breathing heavy.

"Finish," Emma whispered, her legs wrapping tightly around his hips.

Alex pushed deep into her and ejaculated, the hot pulse of his semen flooding her deep inner walls. They were both fully protected by the alchemical routine. He remained pressed heavily against her, his chest heaving, waiting as the aftershocks of her orgasm slowly eased.

Alex withdrew slowly. He walked into the adjoining washroom, his bare feet silent on the floorboards, and returned with warm, damp cloths. He carefully wiped the slick mixture of semen and arousal from her inner thighs, then cleaned himself. He brought her a glass of water from the pitcher on the nightstand.

Emma sat up against the pillows, pulling the cotton sheet over her lap. She opened the drawer of the nightstand and pulled out a sheet of heavy Edelhart stationery and a pen.

"We need this in writing," Emma said, her tone shifting back to the sharp, pragmatic noble he respected.

She wrote three distinct lines in precise cursive:

1. No surprise pregnancies. The alchemical regimen is absolute.

2. No public scandals that bring harm to the Arlon or Edelhart families.

3. No woman within the household may use Alex's name to attack another without his explicit permission.

Emma signed her name at the bottom. Alex took the pen with his left hand and signed beneath it. He hated the clinical nature of the rules, but he understood the absolute necessity of them. It was a foundation.

The System interface chimed silently in the corner of his vision, acknowledging the shift from volatile ownership to a structured primary partnership.

[Meaningful Emotional Agreement Reached: +80 LP]

His balance ticked upward to 100 LP.

Alex stood up to return the damp cloths to the washroom. While his back was turned, Emma picked up the pen again. At the very bottom of the parchment, beneath their signatures, she quietly wrote a fourth line.

I will become too useful to replace.

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