***

See disclaimer in Chapter 1. No money being made here ..

Author's note: For Christi, who asked for the Transfiguration classroom, and SwarmOfFangirls who wanted to see arousal spells used. Warnings for slash and voyeurism … actually a bit tame on kinks after the last few … this is H/D plus another male.

***

Harry fidgeted, an uncomfortable prickle of apprehension washing over him as he entered the Transfiguration classroom. He turned to Ron to comment on the feeling, but the redhead seemed unaffected. Seamus passed through next, but he seemed not to feel anything , either.

Strange, Harry thought, slipping into his seat in the middle of the room beside Seamus. Ron rolled his eyes at them, continuing on to the front desk where Hermione was already unpacking her books. She'd insisted on sitting in the front row in most of their classes, and she'd made it abundantly clear that if Ron expected her help with his assignments he'd sit where she could keep an eye on him during class.

Harry snickered, giving Ron a small wave. She'd made the same threat to him, of course, but it hadn't mattered; he had Draco, and Draco was every bit the bookworm Hermione was. Plus Harry could buy his help with sexual favors, which he considered a win-win situation. He had a feeling Hermione was growing suspicious of his rising grades now that she knew he and Draco were involved.

He shifted his weight in the seat as another strange feeling swept over him. He glanced at Seamus again, but the Irishman seemed not to have noticed anything amiss. Harry let his eyes wander lazily over the mostly full classroom, settling on Draco as surreptitiously as he could. The blond looked unusually smug, which Harry took as a bad sign. When Hermione glanced over her shoulder, her eyes meeting Draco's briefly, Harry knew something horrible was about to happen. Another unfamiliar sensation passed through him when McGonagall entered the room and began writing the instructions for that day's lesson on the board, and he felt a light sheen of sweat on his back, making his shirt stick to his skin. He was suddenly certain that whatever was about to happen would be beyond embarrassing; this had to be revenge for the potions incident.

"You'll be working in pairs today," she said, and Harry grimaced when he felt another burst of heat shoot through him, this time pooling in his groin instead of dissipating. There was no longer any doubt; this was definitely some sort of revenge orchestrated by Draco, and probably Hermione, too.

"You will be attempting to use Transfiguration as a defensive strategy. One partner will cast a low-level –" she broke off, turning a stern glare on Draco and Pansy, who were snickering at the back of the room – "low-level, Mr. Malfoy and Miss Parkinson –" she held their gazes for another moment before shaking her head and turning her attention back to the class at large. "As I was saying, one partner will cast a low-level jinx, not a hex or curse, at the other. The other's job will be to Transfigure the energy of the spell into something harmless."

She pulled Ron up to the front of the classroom, ignoring the blush that stained his cheeks.

"Jinx me, Mr. Weasley," she said, her voice sharp.

"I – I, Professor! I can't –"

She pursed her thin lips, flicking her wand at the babbling teen in front of her. He instantly sprouted bunny ears, which flopped comically as he shook his head, adamant that he could not jinx a professor.

Ron's eyes widened when he realized what had happened, but he still protested. When she gave him a tail to match his ears, making it break straight through his robes, he suddenly overcame his objections, shooting a tongue-twister jinx at her.

The class watched as the jet of light left Ron's wand, hovering in the air for just a moment before exploding into a small snow shower and falling to the floor when the professor used the incantation.

"The spell is Vicissitudo," she said, cancelling the spells on Ron and letting him retake his seat, his entire face now burning with humiliation. "It requires an intense amount of concentration. You must be able to anticipate the caster's timing as well as focus enough to see the spell leave the wand. As you say the incantation, envision the spell turning into whatever you've chosen. You may begin. And remember! Low-level jinxes only."

Harry shifted again, swallowing hard as he felt his body begin to respond to the odd stimulus that kept pulsing through him at random intervals. His pulse was racing, and his muscles had begun to tense in anticipation of the next attack. He'd struggled to pay attention to McGonagall's demonstration, hoping that if he mastered the spell early he might be allowed to leave the classroom.

"Ready, mate?" Seamus asked, pushing his chair back and adopting the standard dueling stance. "You want to go first?"

Harry felt his face flush at the prospect of standing. His cock was half-hard by now, and he doubted his robes would conceal his burgeoning erection if he was in dueling position. The other boy seemed to notice his hesitation, eying him curiously.

"Alright there, Harry?"

Harry nodded, biting his lip to keep himself from gasping when the sensation returned. It was getting stronger with each pass, and he didn't know how much longer he could keep his body from responding completely.

"So, you first? Me?"

"I-I'll go first," Harry said, his voice slightly strangled. He stood carefully, making sure the drape of his robes hid his erection. He wished there was an easy remedy for his flushed face and his erratic breathing.

They took their positions, mirroring their classmates around them. It looked like Hermione had already managed to semi-disarm one of Ron's spells, though not completely. Harry smirked at her as she ended the Tarantallegra spell that had only affected one foot.

Harry bit his tongue when another wave of heat rolled over him. His cock was pressing uncomfortably against his trousers by now, and he shifted again to try to relieve some of the pressure.

"Harry? Ready?"

He blinked, turning his attention back to Seamus. The sandy-haired boy was studying him carefully, and Harry fussed with his robes again, making sure his trousers were covered.

"Ah, yes. Of course. Go."

Seamus nodded, leveling his wand and casting a jinx to turn Harry's hair Slytherin green. The other boy barely managed to start the incantation to counter it when it struck. Harry could hear Draco and Pansy laughing behind him.

They shot spells back and forth at each other for twenty minutes, never quite managing to Transfigure the jinx in time. All the while, Harry's arousal grew, leaving him nearly panting with the effort of keeping his hands off his aching erection.

"Coming at you again," Seamus warned, pointing his wand at Harry and incanting a minor jinx.

He tried to visualize the jet of light turning into a shower of harmless sparks, but another pulse of arousal surged through him, bringing his aching cock to mind. He heard Seamus choke when the spell took on that form briefly before exploding and showering the floor with multicolored sparks of light.

"Er –" Seamus stared at the floor, not even certain he'd seen what he thought he'd seen. But Harry had been acting awfully strange all class period. What if it had been?

"Sorry, sorry," Harry muttered, his face flaming now. He nearly cried out when his overly sensitized erection throbbed again, the cotton of his boxers actually beginning to feel abrasive against the stretched skin.

Seamus watched Harry reach his hand down as surreptitiously as he could, tugging at the crotch of his robes. He held Harry's emerald gaze when the other boy looked up, shocked to see desire and challenge burning there as well as embarrassment.

"Do you need to, ah, sit down?" Seamus asked, beginning to feel a bit overheated himself. He'd never imagined Harry might be interested in guys, and the thought loosed a torrent of images in his mind. He swallowed hard, taking a seat himself when he felt his own cock begin to harden.

"I think so," Harry said quietly, slumping into the chair. He pillowed his arms on the desk, burying his hot face in them. The waves of arousal just kept coming, making him harder than he'd ever been before and desperate for release.

Neither Gryffindor noticed when the professor dismissed the class a few moments later. It wasn't until Draco cleared his throat nearby that either of them even looked up.

"Clear off, Malfoy," Seamus spat, glaring at the blond. "Leave him alone."

Draco leveled a cool gaze at the Irishman, clearly assessing him. He appeared to come to some sort of decision before he nudged Harry's foot with his own. Harry responded without looking up.

"Whatever. Fine."

Draco smirked at the tremor in Harry's voice. From the sound of it, and Harry's behavior during class, the spell he'd hit him with as they walked in had been successful. He and Hermione had spent hours researching before they'd found the Erigo spell in a book of old hexes. Its effects were instantaneous; in fact, it had been a favorite of duelers in the 18th century because it crippled any male opponent with a painful erection within seconds. It had been Pansy's idea to add the Sensim spell, which mitigated the effects of the arousal spell somewhat, allowing it to surge over the victim in slow waves, eventually building up to the full effect of the Erigo spell.

"Can you keep a secret, Finnigan?" Draco drawled, watching the Gryffindor carefully.

Seamus sputtered, his eyes widening when the blond Slytherin laid a hand on Harry's shoulder – and didn't get hexed.

"I've heard stories about you, Finnigan," Draco continued, his tone conversational. He began to knead Harry's shoulders, ignoring the appreciative groans that escaped from the dark-haired boy's mouth. "Are they true?"

Seamus watched the way Harry melted under Malfoy's hands, his heart racing. They were fully clothed, and it was one of the hottest things he'd ever seen. An image of the two of them twined around each other, light on dark, flooded his mind. He flinched, still holding Draco's unwavering gaze. The blond was smirking. Legilimency or his over-active imagination? Seamus wasn't sure.

"That depends on what you've heard," he said carefully, his eyes still glued to the two boys in front of him. Draco had pulled Harry back into an upright position and was slowly unbuttoning his robes.

"That you're discreet," Draco said, running the pad of his thumb over Harry's bottom lip, which was red and swollen from the persistent way Harry had been biting it during the class. "And bent. And that you like to watch."

Seamus choked, wondering if this was all some sort of elaborate prank. Or perhaps he'd been hit with a stray spell during class; maybe he was unconscious. Yes, he decided. That's probably it. I'll be waking up in the Infirmary any minute now with a great stonking erection. Fabulous.

"Not a dream, Finnigan," Draco said softly, his fingers now caressing Harry's face. The other boy's eyes had fallen shut, and he was leaning into the light touches.

"Get out of my head, you arsehole!" Seamus blinked purposefully, obviously trying to end the Legilimency connection he suspected the Slytherin had.

"He's not," Harry said, the first reaction he'd given any of their words so far. He still didn't open his eyes. "And I know you're into blokes. Your Silencing Spells are shite."

Seamus stiffened, his cheeks coloring as he tried to remember if he'd had any incriminating fantasies lately. He had to admit that the scene playing out in front of him really could have been from his dreams – who didn't imagine the two fittest boys in school together?

"We're together," Harry said quietly, turning his head away from Draco's fingers and looking at Seamus purposefully. "Not many know, and it needs to stay that way, for now at least. But we're not selfish," he continued, a wicked grin splitting his face. "We like to share."

Seamus knew his mouth was hanging open, but he couldn't force himself to close it. Was he really being propositioned by Harry Potter and Draco bloody Malfoy?

"Oh be nice," a new voice chimed in, making Seamus jump. He whirled around and found himself looking directly into Hermione's amused eyes. He hadn't heard her come in, so he assumed she'd never left, like Malfoy. "Harry and Draco are dating, but they like to play around. We're on a mission to have sex in as many different ways and as many different rooms in the castle as we can. Are you in?"

Seamus gaped at her. Hermione Granger. Upstanding Gryffindor. Smartest witch of their generation. Head Girl. Hermione Granger was in on this as well? She had sex with Malfoy and Harry?

"Yes or no, Seamus," she said impatiently, her gaze shifting to Harry, who was whimpering softly as Draco cupped his erection through his robes. They hadn't lifted the spell, and Hermione knew the dark-haired boy must be in agony. Serves him right, she thought with a smirk, her own pulse jumping at the sight. "If it's yes we'll explain completely later, after we watch these two take care of Harry's little problem. If it's no, I'll take you into the corridor and Obliviate the last few minutes from your memory. Your choice."

He licked his lips, his mind racing. He followed Hermione's gaze, watching pale hands strip away Harry's dark robe before curling lovingly around the bulge in his trousers. Harry bucked up into Draco's palm, his teeth clenched as he held back another moan.

"Yes," Seamus croaked, unable to believe what he'd just agreed to, but unable to regret it. The thought of losing these last few minutes – not to mention what was about to come – was inconceivable. This was better wank material than even his imagination could provide.

"Excellent," Hermione said, pulling a chair out and settling in next to him. It was then that he noticed the small camera she'd left on the desk she'd been using during class. It was trained on Harry and Draco, obviously filming their every move.

"Draco, please," Harry whined, nearly crying when the blond removed his hand completely. He was so hard it was painful, and he wanted nothing more than to come. He could think of little else.

Draco quirked an eyebrow at him, challenging him to protest again. Harry obediently shut his mouth, his lips clamped together tightly. Harry could have crumpled in relief when Draco moved forward again, this time to unfasten his trousers. He reached his hand in without bothering to pull the fabric away, drawing Harry's angry red cock out.

"Poor Harry," Draco mocked, letting his lips hover just above the purpled head, which was glistening with precome. "This looks terribly uncomfortable."

Harry gritted his teeth to keep himself from responding to Draco's baiting, knowing any response would only delay what he hoped Draco was about to do next. Sure enough, the blond nodded in approval before swiping the flat of his tongue across the head of Harry's cock, making the dark-haired boy moan loudly and push his hips up for more contact.

"Merlin," Seamus whispered, fighting the urge to shove his hand inside his robes and wrap his fingers around his own aching cock. When Draco's pink tongue shot out again, laving Harry's erection from root to tip, the Irish wizard groaned again.

"Go ahead," Hermione whispered, leaning in so she wouldn't distract Harry or Draco. "No one here will care, and we'll be seeing a lot more of you in the future."

Seamus flushed at her words, still unwilling to wank in front of an audience. Malfoy's comment that he liked to watch was true, but he rarely participated in groups.

But then he heard Malfoy unzip his own trousers, thrusting the hand that wasn't holding Harry's hips down into his fly. The undeniable sound of him fisting himself as he swallowed Harry's cock proved to be too much, and Seamus gave in, following suit and quickly unfastening his trousers. Moments later he was pulling furiously at his own erection, timing his strokes with Malfoy's. it was surprisingly erotic, and definitely the best wank he'd ever had.

"Draco, Draco," Harry chanted, his hands clenched around the arms of his chair to prevent himself from grabbing the blond's head and fucking his mouth harshly. The warm, wet heat of Draco's mouth felt incredible after his tortured arousal, and all he wanted was more.

Draco hummed around Harry's cock before letting him thrust deep, the head of Harry's cock brushing against the back of his throat. The Slytherin swallowed convulsively to keep himself from gagging, knowing how amazing his contracting throat would feel around Harry's cock.

"Oh fuck, Draco!" Harry cried, losing control completely and giving himself over to his orgasm, his eyes pricking with tears as he flooded Draco's throat with jets of hot come. He'd never been so relieved to come in all his life, and it felt amazing to be able to let go after spending more than an hour hard and wanting.

Draco groaned, his throat still working to swallow Harry's semen even as he shot his own release into his hand, his hips bucking forward as his release shuddered through him. Both boys were so caught up in their own orgasms that they didn't notice Seamus' stifled cry or the way his head lolled back as he came as well, covering the front of his robes with sticky ropes of come.

"Beautiful," Hermione whispered, a sly grin curving her lips as she looked over the three sated boys. She was aroused as well, but made no move to do anything to relieve it; she was meeting with Pansy and Luna before lunch, and she was sure she'd find her satisfaction there.

Seamus squeezed his eyes shut, the reality of what he'd done – and what he'd just watched – crashing down on him with Hermione's whispered word. Sensing his embarrassment, Hermione leaned forward, pressing a hard kiss to his slack mouth. He nearly jumped out of his skin when he felt a warm mouth sucking on his fingers, licking them free of his come. When Hermione pulled back from the kiss he looked down, shocked to see Harry still swirling his tongue around his fingers.

"Nothing's off limits, Finnigan," Draco said, dipping his head down and kissing him. He could taste Harry's come on Draco's tongue, and he felt his spent cock twitch in excitement. "Like Harry said, we share."

Hermione laughed, shaking her head. There was little Draco wouldn't do for shock value, but she knew he'd had his eye on their dorm mate for quite some time. It wasn't coincidence that they'd chosen Transfiguration, when Harry sat next to Seamus, to get their revenge on Harry.

"That was Draco Malfoy giving Harry Potter, who was under the effects of an arousal spell, a blow job in the Transfiguration classroom while Seamus Finnigan and Hermione Granger watched. Cut."

***

TBC: Poor Seamus … or is it lucky Seamus? We'll see. Stay tuned!