The cauldron simmered with a low, rhythmic bubble that seemed to syncopate with the frantic beat of her heart. Harry kept his eyes fixed on the silver liquid, his arm moving in a steady, mechanical arc as he worked the glass rod through the thick base. Draconia stood just behind his shoulder, her presence a warmth that felt entirely too close for a cold dungeon. She did not move away, but instead leaned in, her chest nearly brushing the fabric of his robes as she peered at the progress of the potion.
"It is too pale," she observed, her voice a low murmur in his ear. "The viscosity is wrong, Potter. If you do not maintain the tension, the ingredients will separate."
Harry swallowed, the sound audible in the quiet of the laboratory. He could see the edge of her sleeve, the way the dark fabric caught the light of the flickering torches. "I am stirring as fast as the instructions dictate," he said, trying to keep his tone even.
"Faster," she commanded, her tone brook no argument. "The heat is rising, and the reaction must be continuous."
He increased the speed of his wrist, the glass rod clacking softly against the sides of the cauldron. He felt her shift, her hand coming to rest on the edge of the workbench just inches from his hip. The closeness was a physical pressure. He could smell the faint, sharp scent of dried valerian on her skin, a scent that felt strangely intimate in the middle of the night.
"Don't stop," she said, her voice dropping an octave. "Keep stirring. Do not look away from the work."
Harry felt a sudden, sharp heat bloom in his groin. He tried to focus on the movement of his arm, but his gaze betrayed him. He looked over his shoulder, seeing the way her eyes tracked the motion of his hand. She was looking at his arm, her eyes heavy and dark.
"Are you going to watch me all night?" he asked, a desperate attempt at bravado.
"I am watching the potion," she replied, though her eyes moved upward to meet his. "I am watching the way you handle it."
She moved closer, her body pressing against the back of his chair, then stepping around it until she stood directly in front of him. She did not sit. Instead, she reached out and gripped the edge of the workbench, her knuckles white. The movement of her hips was a slow, deliberate sway that caught his breath.
"The heat is not just in the cauldron, Potter," she whispered.
She reached down and grasped the hem of her skirt, pulling the fabric up to her waist. Harry watched, his heart hammering against his ribs, as she revealed the pale skin of her thighs. He could see the dark shadow of her hair between her legs. She stepped closer, her knees bumping against his, and then she reached for the fastening of his trousers.
"Draconia," he breathed, his hand leaving the rod for a moment before he remembered his duty. "The potion..."
"Keep stirring," she commanded, her voice a sharp, breathless command.
He grabbed the rod again, his knuckles white as he forced himself to continue the circular motion. The glass scraped through the thick, viscous fluid. He felt her fingers f enough to unbutton his fly, her hand sliding inside to find his cock. He was already hard, a thick, pulsing length that felt too large for the confines of his clothes.
"Don't you dare stop," she muttered, her eyes locked on his.
She guided his cock out of his trousers, the cool air of the dungeon hitting his skin before her warm hand wrapped around him. She began to stroke him, her thumb rubbing over the head of his cock as she watched the cauldron. Harry groaned, a low, guttural sound, but he kept his arm moving. The rhythm of the stirring matched the rhythm of her hand.
"It is getting thicker," she said, her voice trembling slightly. "The texture is changing."
She leaned forward, her mouth hovering just above his. He could feel the heat of her breath. She reached down with her other hand, her fingers finding her own pussy. She slid two fingers into her wet cunt, the sound of her own lubrication audible in the quiet room. She began to rub her clitoris, her movements frantic and hungry.
"Fuck, Draconia, the potion is going to break," Harry gasped, his eyes wide.
"Then let it break," she said, her voice a jagged edge of desire.
She moved her hand from her own sex to his cock, her grip tightening as she began to pump him. The sensation was overwhelming. He felt the pressure building in his hips, a heavy, throbbing ache that demanded release. He watched the silver liquid swirl, the steam rising in thick clouds around them.
"Is it ready?" he asked, his voice breaking.
"Not yet," she said, her eyes fixed on his. "It needs more heat."
She reached down and shoved her hand into her pussy, her fingers disappearing into the wet, hot depths of her cunt. She began to move them in a rhythmic, slapping motion. He could see the way her thighs trembled, the way the skin of her inner thighs flushed a deep pink. He felt the urge to drop the rod and take her, to shove her against the bench and drive himself into her, but the instruction held him.
"Keep stirring, Potter," she breathed, her head tilting back. "Keep it moving."
He increased the tempo of the rod, the glass hitting the sides of the cauldron with a frantic, percuss la rhythm. His cock was a rigid, aching weight in her hand. She began to slide her fingers out of her cunt, the wetness glistening in the low light. She brought her hand up to his mouth, her fingers slick with her own juices.
"Taste it," she commanded. "Tell me if the flavor is right."
He leaned forward and licked her fingers, the salty, primal taste of her pussy coating his tongue. He swallowed, his eyes never leaving the silver surface of the potion. The heat in his gut was a roaring fire. He felt his cock twitch in her hand, the head of it rubbing against her palm.
"It is perfect," he choked out.
She moved her hand back down, her fingers finding the entrance of her cunt again. She began to work herself, her fingers disappearing into her wetness as she rubbed her clitoris with a fierce, desperate intensity. She was whimpering now, the sounds of her pleasure filling the space between them.
"I'm close," she gasped, her eyes rolling back. "I'm so close."
He felt the tension in his own body reach a breaking point. He was stirring faster than ever, the liquid in the cauldron a blurred, silver vortex. He could feel the cum building in the base of his cock, a heavy, pulsing pressure that demanded to be released.
"Don't stop," she cried, her hips bucking against his thigh. "Keep stirring!"
He gave one final, violent turn of the rod. As he did, she let out a high, sharp cry, her body tensing as she came. Her cunt squeezed her fingers, the muscles of her walls pulsing around her hand. At the same moment, Harry felt his cock burst. He could not hold it back. He groaned, his head falling back as he felt the hot, thick spray of his cum erupting from his tip. It hit her hand, coating her fingers and her wrist in warm, white streaks of semen.
He watched the white liquid drip from her hand, a stark contrast to the dark, silver potion. He felt the exhaustion hit him, a heavy, delicious weight in his limbs. He let the rod clatter onto the table, the sound echoing in the hollow room.
"You did it," she whispered, her voice breathless and triumphant.
She wiped a stray bit of cum from her thumb and length, her eyes sparkling with a dark, satisfied light. She