He stays, but his eyes land on Cassiopeia's Dark Mark

The steam in the Prefect’s Bathroom swirled lazily, a fragile cocoon around Harry, Pansy, and Cassiopeia. Their shared laughter had long faded, replaced by a quiet intimacy, their bodies pressed close in the warm water. Harry’s arms draped loosely around both girls, his fingers tracing idle patterns on Pansy’s hip.

But his gaze kept drifting to Cassiopeia’s forearm, where the Dark Mark coiled like a venomous snake, its presence a stark reminder of the danger lurking beneath their stolen moment. He’d seen it earlier, winced at its ugliness, and Pansy’s quick assurance that it “wasn’t Cass’s first choice” had done little to ease the knot in his chest.

Now, as the silence stretched, the mark seemed to pulse, demanding attention. Harry’s jaw tightened, his fingers stilling on Pansy’s skin. The memory of Cassiopeia’s casual display—her arm raised as she mirrored Pansy’s pose, the mark bared without shame—gnawed at him. He’d let it slide then, caught in the heat of the moment, but now, with the water lapping gently and the air heavy with unspoken truths, he couldn’t ignore it any longer.

“Cass,” Harry said, his voice low, laced with a simmering edge that cut through the steam. “That mark. You said it wasn’t your choice, but what does it mean? What are you doing for them?” His green eyes locked onto hers, searching for answers, the weight of his question pressing against the fragile warmth they’d built.

Cassiopeia’s playful attitude faltered, her lips parting as a flicker of guilt crossed her face. She drew her arm beneath the water’s surface, as if hiding the mark could erase its reality. “Harry, it’s… complicated,” she murmured, her voice soft, almost pleading. Her eyes, usually sharp with mischief, were clouded with fear, and she glanced at Pansy for support.

Pansy’s hand tightened on Harry’s arm, her touch grounding but urgent. “She’s telling the truth, Harry,” she said, her voice steady despite the worry etched into her features. “You need to hear her out. It’s not what it looks like.” Her dark eyes met his, reflecting the torchlight’s flicker, a silent plea for patience.

Harry’s chest tightened, anger and concern warring within him. He pulled back slightly, water rippling around him, his gaze never leaving Cassiopeia. “Then tell me,” he said, his tone firm but not unkind. “What are you doing for Voldemort? Because that mark isn’t just a tattoo, Cass. It means you’re in deep.”

Cassiopeia’s breath hitched, her fingers twisting together beneath the water. She looked down, her pale hair falling like a curtain, shielding her face.

“It wasn’t my choice,” she said, her voice barely above a whisper, each word heavy with shame. “Voldemort **** it on me. On my family. My father, as you know firsthand, he failed the Dark Lord. This is our punishment.” She lifted her eyes, meeting Harry’s, her gaze raw and ****.

“He gave me a task. An impossible one.”

Harry’s heart sank, though he kept his expression hard. “What task?” he asked, though the dread pooling in his gut told him he already suspected the answer.

Cassiopeia swallowed, her lips trembling. “To kill Dumbledore,” she confessed, the words spilling out like a wound reopened. “He wants me to smuggle **** Eaters into Hogwarts. There’s a Vanishing Cabinet in the Room of Requirement—I’ve been trying to repair it. It links to another in Borgin and Burkes. If I fix it, they’ll come through. If I don’t…” Her voice cracked, and she looked away, her shoulders trembling. “He’ll kill my mother, my father. Me.”

Pansy’s hand found Cassiopeia’s, their fingers interlocking beneath the water, a silent tether in the storm of her admission. Harry’s anger flared, hot and sharp, but it was tempered by the sight of Cassiopeia’s fear, the weight of her confession. He ran a hand through his damp hair, pacing a step in the shallow water, the tiles cool against his feet.

She’s not Draco, he harry reminded himself, his mind racing as the realization struck him anew. I made her this way. She’s Cassiopeia now, and she loves me. His own power echoed in his thoughts, a reminder of how he’d reshaped her, bound her heart to his with a few careless words. Now she stood before him, torn between that love and the terror of her task, her vulnerability a mirror to his own responsibility.

Cassiopeia’s eyes glistened, her lips trembling as she nodded, as if sensing his thoughts. “I do love you, Harry,” she said, her voice fierce despite its tremor. “That’s why I’m telling you. But you can’t go after them. The **** Eaters—they’ll destroy you. I can’t lose you.” She reached for him, her fingers grazing his arm, her touch ****. “If you try to stop this, you’ll be walking into their trap. And my family… they’ll pay the price.”

Pansy’s expression mirrored Cassiopeia’s fear, her lips pressed into a thin line. “She’s right,” she said, her voice tight. “You’re strong, Harry, but you’re not untouchable. Let us figure this out—Cass and I can find a way to delay things, maybe sabotage the cabinet so that the **** Eaters have an accident when using it?”

Harry shook his head, his resolve hardening like stone. “No. If that cabinet’s a way in for **** Eaters, I’m shutting it down.” He met Cassiopeia’s gaze, his eyes fierce but warm with trust. “You love me, Cass. I feel it. And I know you’re scared—for me, for your family. But you also know I can’t let this happen. Not to Hogwarts, not to Dumbledore.”

Cassiopeia’s breath shuddered, her grip on his arm tightening. “Harry, please,” she whispered, tears spilling down her cheeks, catching the torchlight like tiny sparks. “They’re merciless. If you go to that cabinet, you’re putting yourself in their sights. I can’t bear it.”

Harry’s expression softened, his anger giving way to determination. He cupped her face, his thumbs brushing away her tears, his touch steady and sure. “I’m not asking you to be okay with it,” he said, his voice low, anchoring her. “But you know me. You know I’ll do this with or without you. If you help me, we can face it together. You and Pansy—you can show me the cabinet, help me stop this. I trust you both.”

Cassiopeia’s lips parted, a protest forming, but it faltered as she searched his eyes. The love she felt for him, woven by his magic yet achingly real, clashed with her fear. She glanced at Pansy, who gave her a small nod, her hand still clasped in Cassiopeia’s. Finally, Cassiopeia let out a sigh, her shoulders sagging in surrender.

“Alright,” she said, her voice soft but resolute. “I’ll take you to the Room of Requirement. I’ll show you the cabinet. But only because you’re too stubborn to back down, and I’d rather be there to keep you safe.”

Harry’s lips curved into a faint smile, relief flickering in his eyes. “That’s my girl,” he said, his tone warm but firm. He turned to Pansy, his gaze softening further. “You with us?”

Pansy’s mouth quirked into a wry smile, though worry lingered in her eyes. “Like I’d let you two face this alone,” she said, her voice lighter than her expression. She rose from the water, her movements fluid, and reached for a towel, the steam clinging to her skin. “Let’s move. The sooner we deal with this, the better.”

Cassiopeia lingered a moment; her eyes locked on Harry’s. “I’m doing this because I love you,” she said, her voice fierce, a vow wrapped in fear. “Don’t make me regret it.”

Harry pulled her close, pressing a kiss to her forehead, the gesture tender yet resolute. “I won’t,” he promised, though the weight of his power and the danger ahead pressed heavily on him.

They stepped out of the tub, the air cool against their damp skin as they dressed in silence. The playful intimacy of earlier had vanished, replaced by a shared purpose that bound them tightly. Harry pulled the Marauder’s Map from his pocket, its parchment rustling as he scanned it for signs of trouble. The corridors were clear, but the weight of Cassiopeia’s task and the threat of the Vanishing Cabinet loomed like a shadow.

They moved quietly through the bathroom’s door, slipping into Hogwarts’ darkened halls. The castle’s silence was heavy, the torchlight casting long, wavering shadows that seemed to whisper of secrets. Harry led the way, his wand in hand, with Cassiopeia and Pansy close behind, their steps soft but determined. The Room of Requirement awaited.

As they neared the seventh-floor corridor, Cassiopeia’s hand brushed Harry’s, her fingers trembling. He squeezed them gently, a silent reassurance. The door to the Room materialized, its surface plain yet heavy with possibility. Harry’s pulse quickened, not with fear, but with the thrill of his power and the weight of what lay ahead.

“Ready?” he asked, his voice low, his eyes meeting theirs.

Pansy nodded, her jaw set. Cassiopeia hesitated, then lifted her chin, her love for Harry eclipsing her fear. “Ready,” she said, her voice steady at last.

The Room of Requirement swallowed them in a hush of shadows, the air thick with the musty scent of forgotten things. The door clicked shut behind them, its echo swallowed by the vast, cavernous space that stretched before them. Towers of clutter loomed—broken chairs stacked precariously, cracked mirrors reflecting slivers of torchlight, and dusty tomes spilling from sagging shelves.

The faint hum of magic pulsed beneath it all, like a heartbeat woven into the walls. Harry’s wand cast a soft glow, carving a path through the dimness, his breath steady but his pulse racing with anticipation.

Cassiopeia’s grip on his hand tightened, her fingers cold despite the warmth of their earlier closeness. She moved cautiously, her eyes darting to the shadows, as if expecting the cabinet to leap out like a predator. Pansy flanked them, her wand raised, her steps deliberate, her gaze sharp as she scanned the labyrinth of discarded treasures.

The silence was oppressive, broken only by the occasional creak of settling wood or the distant drip of something unseen. Harry’s thoughts churned—This is it. The key to their plan. His power thrummed within him, a tempting whisper to reshape reality, but he held back, needing to see the cabinet first.

They wove through narrow aisles, brushing past a tarnished suit of armour and a moth-eaten tapestry that sighed faintly as they passed. Cassiopeia paused, her breath hitching, and pointed to a shadowed alcove ahead. “There,” she whispered, her voice barely audible, laced with dread.

The Vanishing Cabinet stood alone, a tall, imposing structure of dark wood, its surface carved with intricate runes that seemed to writhe in the wand light. Its doors were slightly ajar, revealing a void within, as if it swallowed light itself. A faint, unnatural chill emanated from it, prickling Harry’s skin.

Harry stepped closer, his wand trained on the cabinet, his jaw set. The air around it felt wrong, heavy with the residue of dark magic, like a storm about to break. Pansy’s hand brushed his arm, her touch grounding him, but her eyes were fixed on the cabinet, wide with unease.

“That’s it,” Cassiopeia murmured, her voice trembling, her gaze locked on the runes. “I’ve been working on it for months. It’s almost ready.”