The steam from the cauldron rose in a thick, rhythmic pulse that matched the heavy thud of her heart. Draconia sat on the edge of the wooden workbench, her robes bunched around her waist as she watched the liquid swirl. Harry was between her legs, his knees pressing into the stone floor of the dungeon. He looked up at her with an expression that was entirely too hopeful, a look that made her want to scream and kiss him at the same time. The potion was supposed to be the main event of her term, a perfect execution of a complex recipe, but the way his fingers worked the fabric of her knickers made her forget the exact viscosity of the solution.
"You are staring," Harry said, his voice low and rough. He reached up to brush a stray strand of blonde hair from her face. His hands were warm against her skin, a sharp contrast to the damp chill of the dungeons. He was watching her with an intensity that felt like a physical weight.
"The timer is not due to trigger for another twenty minutes," Draconia replied, trying to maintain her composure. She reached down to grab his wrists, pulling his hands away from her face and down toward her chest. She wanted his warmth, but she also wanted to control exactly when he gave it to her. "You should be focusing on the temperature, not my face."
"It is hard to focus on the temperature when you are looking at me like that," he muttered. He leaned forward, pressing his forehead against her stomach. "Are we actually going to finish this, or are you just going to keep teasing the steam?"
"It is a precise science, Harry. You know that." She gripped his hair, pulling his head back so she could look into his eyes. "If the heat fluctuates by even a degree, the entire batch is ruined. But you are not a potion. You are a distraction."
"A very intentional distraction," he whispered. He began to move his hips, his cock sliding against the silk of her underwear. He was hard, a rigid length of heat that pressed against her thigh. "Is this part of the recipe too?"
"It is part of the ritual," she said, her voice breaking slightly as he moved. "The third hour is always the hardest. The patience is wearing thin."
He didn't wait for her to finish the thought. He shoved her knickers aside, exposing her wet, swollen cunt to the cool air of the room. He gripped her hips, his thumbs digging into her skin, and he began to fuck her with a single, long motion. His cock was thick and hot, sliding into her pussy with a blunt force that made her gasp. He didn't use much lubrication other than her own juices, and the friction was intense. She wrapped her legs around his waist, pulling him deeper into her.
"Fuck," he groaned, the word a jagged edge in the quiet room. He pushed into her again, his cock hitting her cervix with a heavy thud. "You are so tight, Draconia. Every time, you get tighter."
"Because you are being too fast," she hissed, her fingers digging into his shoulders. "Slow down. The cauldron is bubbling too aggressively."
"Let it bubble," he said, his voice straining as he hammered into her. The sound of his cock slapping against her wet pussy filled the small space between them. It was a wet, rhythmic noise, a crude percussion that echoed off the stone walls. He was fucking her with a desperate energy, his breath hitching as he neared the edge. "I can't... the timing... it's too much."
"Not yet," she commanded, though her own pleasure was a screaming thing in her gut. "Don't you dare finish yet. You have to wait for the signal."
He groaned, a low, guttural sound of frustration. He pushed himself into her, his cock stretching her pussy wide as he searched for more depth. He was relentless, his movements becoming shorter and faster as he fought the urge to come. Draconia felt the heat of him, the way his cock pulsed inside her, driving her toward a precipice she wasn't ready to cross. She wanted to let him, to let him spill his cum deep inside her and be done with the discipline of it all, but the timer was the only thing that mattered.
"Please," he whispered, his eyes closed tight. "Just one more minute. Let me..."
"No!" she snapped, pulling her hips back to create a momentary gap. The sudden loss of friction made him groan in agony. "Stay there. Stay right on the edge. The cauldron is starting to turn."
As if on cue, the potion in the cauldron hissed and shifted. The deep amber liquid turned a violent, swirling violet, a sign that the reaction was complete. The joke of the book, the moment everyone had been waiting for, was happening in the exact second she had forced him to wait. The cauldron turned, the color changed, and at that exact moment, Harry lost his control.
"It's turning!" he yelled, a strangled sound of triumph and defeat.
He lunged forward, his cock buried to the hilt in her cunt. He gave one final, powerful thrust, and then his body went rigid. Draconia felt the hot, thick jets of his cum hitting her cervix, filling her with a warmth that felt like liquid gold. He came with a violent force, his entire body shaking as he poured himself into her. She felt the pulsing of his cock inside her, a rhythmic thudding that matched the final, frantic bubbles of the potion.
"You did it," he gasped, his head falling onto her shoulder as he collapsed against her. "The timing... it was perfect."
Draconia let out a breath she hadn't realized she was holding. She felt the wetness of his cum leaking out of her pussy, a messy sensation that made her feel entirely unraveled. They both started to laugh, a low, breathless sound that they tried to keep quiet so as not to alert the corridor. The absurdity of it all, the way the potion's completion had dictated the exact second of his orgasm, was too much to bear.
"You are a cruel woman, Draconia Malfoy," Harry said, his voice trembling with the remnants of his climax. He kissed the curve of her neck, his breath still uneven.
"You're the one who couldn't hold it," she teased, though her own eyes were slightly blurred. She ran a hand through his messy hair, feeling the sweat on his skin. "You were supposed to be the one in control of the heat."
"The heat was everywhere," he replied, pulling back to look at her. He looked exhausted and entirely undone.
They sat there in the silence of the dungeon, the scent of the violet potion heavy in the air. The tension of the last three hours was finally breaking, leaving them in a state of beautiful, messy disarray. She looked at the cauldron one last time, seeing the perfect, finished product.
"Three hours down, one to go," she whispered, her voice a mere shadow of its usual poise. Three hours down, one to go, and she had lost the plot entirely.