*** Ten Minutes Later ***

Luna stepped gingerly out of the dorm room. For the first time ever, lewd adventures had rendered her exhausted and physically weakened - her usually angelic face red and shining with sweat, she had scarcely redressed herself, leaving her shirt only mostly buttoned and her tie loose around her collar. Her hair entropy manifest: wild strands shooting this way and that, bearing more resemblance to a straw bale than a human head. It wasn't even as if she'd had any relief; that had been cruelly denied by her captors, bent on torturing her for her perceived attempt to break their pact. She hadn't actually intended to break the pact - it was all a misunderstanding. But a misunderstanding that had left her hornier than ever, sluttier than ever, and secretly relishing the irreligious thought of being anally reprimanded some more. A disturbance to her daydreaming came in the form of a muddy, Quidditch-worn Harry heaving himself slowly up the cramped spiral staircase towards her. Having nothing to do but murmur a greeting and try squeeze past one another, they each took up their role with the required enthusiasm in the socially-mandated show of breathing in and squeezing past. Luna, in her illicit mental preoccupation, pressed her back agains the wall and faced almost directly outwards, having neglected to consider her raging, magically invisible - though tactually palpable erection and the response it might have to being slowly but surely brushed against in a cramped spiral staircase. And the response was this: as Harry pressed against Luna's crotch in his tired efforts to squeeze past, a shockwave was sent shooting along the length of her cock which caused her to gasp and tense up from her shoulders to her arse to her toes and she struggled not to spill over the edge.

"Are you okay, Luna? You look awfully worked up about something?" He inquired gently.

"Um... no, not really. I mean, its alright, nothing really!" She managed to splutter, begging for her cock to calm down a bit so she could unclench and leave.

"Are you sure?"

"Absolutely, I'll see you later!" And she risked being dangerously close to a ruined orgasm to clumsily scamper down the rest of the stairs to venture out to her own house's common room and her own bed.

While it occurred to Harry that this behaviour was slightly odd, he considered that Luna was slightly odd and so dismissed any perceived eccentricities as being perfectly normal in the relation to her character and continued on his way - this thoughts pausing only on the niggling feeling that he had been sure he had detected something hiding under her skirt. Reaching the top of the staircase, he made for the boys' dorm, only to be interrupted by a dressing-gowned Ginny wearing the hungry, pre-orgasm blush that he had scarcely seen of late. However, he remembered giving her the green light to sleep with the girls to keep her hormones in check and while it pained him to think of her being intimate with others, they were still in a committed relationship and were still - where time and place allowed - intimate with each other.

"Harry!" She stepped forward and kissed him tenderly, though for slightly too long to allay any doubt in his mind that her sexual euphoria was mere moments hence. "I wasn't expecting you to be back so soon, I thought practice would go on longer. How was it?"

"Long way to go before the cup, but we have a chance. Do I need to ask what you've been doing? Luna looked awfully flustered on her way down. Felt like she was hiding something as she brushed past me, too."

"Oh, don't be like that. You'd have been welcome if you weren't getting sweaty with Ron." She giggled at her clever innuendo. "It was just myself, Hermione, and Luna if you must know. And..." she bit her lip, blushing again and looking altogether frustrated. "I told you about our pact, didn't I?"

"Our pact?"

"Between me and the girls. No more... distractions until after exams."

"Right." At least now he could stop feeling like her abstinence was personal.

"Well, I didn't... but... Can you keep a secret?"

"Of course."

"Well, ages ago Luna" - she looked around and lowered her voice in a conspiratorial manner - "transfigured herself a penis. Not for any emotional reason, only for the sex. And due to whatever hormones go on down there, she's found it incredibly difficult to keep to our pact. So 'mione and I thought it would be a good game to tie her up and see how far she could go." By now Harry had recovered from whatever Quidditch-induced fatigue he had been battling on his way up the cramped spiral staircase, and was almost bursting from his underwear - not helped by the fact that during all of this his girlfriend had been slowly rubbing his crotch up and down as she spoke. "She actually made a good effort, I really though she was going over the edge when 'mione fucked her up the arse."

"I... thought... Luna had the, the penis?"

"She does, but somehow - and I forget how in the excitement - 'mione temporarily ended up with one, too. She's all back to normal now - 'mione, that is."

"Uhh, Ginny?"

"Yes, dear?"

"I think I'm going to... ughhhh, ahhh! Mmmmhhh..." A long, tense exhalation left Harry's mouth as Ginny's recollections and masturbations made him ejaculate into his underwear and trousers. Using her other hand to grab him by the behind, she pulled him in as close as she could and kissed him until his orgasm subsided and he removed her hand from his crotch. Drawing deep breaths, he kissed her again, taking her head in his hand while relief and relaxation spread themselves in a cloud-like manner to his extremities.

"I love you" she purred as their heads gently nuzzled one another.

"I love you, too. Why don't you let me go and get changed and cleaned up, then we can find some old dusty classroom somewhere and I can distract you from your exams?"

"But the pact..."

"By my reckoning, everyone but you has broken it anyway. And you already seem pretty distracted."

"Luna hasn't."

"I thought you had sex just now?"

"We didn't let her cum." A devious glint flashed in her eyes.

"That's a bit... evil? Does explain the flustered look though."

"Wait, I have an idea! Would you be up for a threesome with us and Luna?" Harry looked as though Christmas had come early. "I know it's a bit complicated, with her... changes. But it would be fun, right?" She had never looked so horny as now - the mere thought of having two cocks to play with at the same time, and finally rid her of her self-imposed prison was almost too much for her to cope with.

"That... would be fun. I am a little curious."

"Right, you go get showered and dressed. I'll send Luna an owl and we'll find somewhere to meet." She kissed him one last time, turned, and disappeared into the girls' dorm.

*** Half an Hour Later ***

The three of them eagerly walked down a suitably abandoned corridor towards their target: a dusty old room that hadn't been visited in decades until Ginny and Harry had found it a few months ago. Opening the door, hinges creaking their objection, they piled in to their theatre of unthinkable smut.

"Alright everyone, clothes off!" Decreed Ginny, already well on the way. Her boyfriend and mistress followed suit; all three desperate to begin.

"You're not just going to torture me again? I really need to cum..." Asked Luna uncharacteristically shyly, her cock rock hard and already dripping precum.

"Definitely not, this pact is useless. It was meant to stop us getting distracted, but we're just getting distracted by how horny and pent up it's made us. We just need a good shag to get it all out." She went over and kissed Luna, taking her dick in her hand as she did so - it twitched with anticipation.

"Where's 'mione?"

"She fell asleep immediately - always does." She began slowly wanking Luna off, careful not to make her cum immediately - some teasing was appropriate. In return, Luna reached out and touched Ginny, matching her intentionally lethargic rhythm until she felt the familiar wetness on the ends of her fingers. Out of her corner of her eye, Ginny saw her boyfriend rub his own cock in time with them, and ordered him closer so she could take control. This was a first for the Weasley: only in her dreams had she pleasured two cocks at once, while being gently fingered to a state of paradise.

After a couple of minutes Ginny realised that if anything more exciting were to happen, Luna would first need to orgasm in order that she didn't cum the instant she pressed against Ginny's labia. Rapidly increasing the pace of her thrusts to an almost supersonic pace, Luna moaned and threw her head back, ejaculating straight away. Weeks and weeks of pent-up cum sprayed with startling force, Ginny's furious wanking hosing every possible direction: all over Luna, all over Ginny, dripping all over her hand, and creating sizeable puddles on the carpeted floor. Many hip spasms and deep breaths later, Ginny allowed her partner to relax, slowing and eventually releasing her cock. Struggling to recover from the biggest climax on record, Luna sank back onto the desk behind her, unable to stand.

"Christ, Luna! You really didn't break the pact, did you?"

"No, that's..." she broke out into giggles, panting for breath and seeing the mess she'd made. She really had coated herself and Ginny in cum - she didn't think even a recovery charm could make her ejaculate anymore.

"That was really hot, I wasn't expecting to be into that!" Said Harry, his cock still in the gentle hand of his lover.

"I haven't even started with you! Your cock's even bigger than Luna's, and I've missed it. Bend me over that desk and fuck me raw!"

He did exactly as he was told, using a stamina charm he softly slid his bigger-than-average member into Ginny's sweet, wet folds and began the tender art of fucking her brains out. Having also been denied orgasm for several weeks, Ginny couldn't hold it in very long at all - lasting tens of seconds before grabbing hold of the desk and screaming for dear life as her entire body lost control of itself. Harry fucked her through all of this, knowing that one orgasm would not be enough to sate Ginny's hunger for cock. Making good use of the stamina charm, he never let up his confident pace even as she begged for reprieve - sure that she didn't mean it. He was proved correct when minutes later a second, even larger orgasm ripped through his whore of a girlfriend, resulting in her losing the power of speech entirely and flailing her arms as she pleaded for rest. Relenting, Harry slowed his pace as she calmed down, eventually pulling out and letting her relax.

"Wow, Harry! You really know what you're doing!" Exclaimed Luna. "I thought I was getting pretty good, but I've never seen her cum like that!"

"We've had quite a bit of practice. And she's been edging for weeks."

"Very true. I wonder, what would you say to fucking me?"

"I thought you enjoyed having a penis?"

"I meant, you know. Anal?"

"Oh! I've never even thought of it."

"I hadn't either until earlier when Hermione fucked me there. It started feeling quite nice by the time she came and gave up. What do you think?"

"Well," he looked over at Ginny, who had not yet moved from her desk, nor regained any agency over herself, and was gently touching her clit to climb down from her euphoria. "Looks like it's just me and you for the time being. Have you recovered?"

"I used a charm. Do you know the lubrication charm?"

"No, there's a...?" He was interrupted by a wave of Luna's wand and a thick, shiny coating appearing all over his cock, dripping slightly onto the floor.

"Ginny has a book with all these in. I think it was 'mione's originally."

"Nice."

Luna stood back up and turned around, sticking out her gorgeous, round behind and rubbing it up and down Harry's soaked dick.

"Start gently, I'm not sure I can handle what you did to Ginny!"

"Are you ready?"

"Uh-huh!"

Harry pressed gently against Luna's entrance, took hold of her hips and pushed. Instantly, Luna moaned loudly, half in pleasure - half in pain, as she felt Harry's enormous member sliding into her hole. Ever-so-slowly, he pulled back out again, letting her relax. Then he pushed back in, eliciting another wail - though encountered noticeably less resistance this time. Gradually, deliberately, he increased the pace until Luna was thoroughly enjoying herself, leaning back to kiss him and reaching back to hold his legs. Harry removed his hands from her hips, using one to pull her hair back - causing her back to arch and her to naturally sink herself lower on his cock - and the other to reach around and wank her off.

"Oh yeah! This is so good! Never stop!"

"I... uh... might have to! This stamina charm is wearing off!" Straight away, he felt his urge to cum retreat, and he looked around to see Ginny, returned to the waking world, pointing her wand at him.

"She said don't stop!"

"Can you cast one on me, too? I'm getting close I think..." Asked Luna, between gasps. Ginny obliged.

"Can I join in?"

"How?"

"If Harry fucks you, you could fuck me?"

"Sure, let's stop one second..." They slowed to a halt, Harry pulling out and letting Luna breath for a second.

"Is your pussy up to another round?" He asked.

"I meant, what if I also tried anal?"

"We've never done that before..."

"Which is why I said 'try'. Unless you'd rather go in the middle?"

"Maybe I would?"

"Fine, Luna can fuck you, and you can fuck me. Everyone happy?"

"So long as you promise to fuck me again after? I was enjoying it!" Smirked Luna.

"Definitely! We've got all night!" Replied Harry.

They lined up, Ginny having cast lube charms on everyone, and Harry gently thrust into Ginny's arse, followed by Luna penetrating him for the first time in his life. Both he and Ginny complained initially, though they quickly adapted to the intrusion, and began to find the pace that everyone enjoyed. Harry had never suspected he might be bi, and he was still confused by Luna's somewhat hybrid state, but as he moved along her cock, he quickly became intoxicated and began to understand Ginny's need to be serviced regularly. She had started touching herself and was obviously close to her third orgasm, plainly loving the shared experience. Harry noted a deep, resonant feeling within him, a spot inside his arse being gently massaged by Luna. Carefully and deliberately, he moved in such a way as to maximise the sensation. Quickly realising that this was going to lead to him cumming, he doubled down his efforts and begged Luna to fuck him harder. She obliged, and soon he and Ginny exploded simultaneously - both experiencing exactly the same sensation. The deep, resonant feeling he had been chasing overpowered everything else in the world, and he felt his body tighten and loosen in a way he had never imagined, his cock pumping gallons of thick cum into Ginny's arse while his thighs failed to take his weight and the two of them slowly declined onto the floor, leaving Luna stood in disbelief. Ginny was also lost in herself, experiencing a potent combination of anal and clitoral stimulation. The two of them moaned and screamed in harmony until their orgasm subsided and Harry slowed thrusting and pulled out - generating one last whimper from them both. All three of them laughed and caught their breath, wondering how such pleasure had eluded them for so long.

Having spent some time recovering, then some more time snogging and touching each other, Ginny suggested something the kinkiness of which surprised her comrades:

"I want to try double penetration."

"Oh, uh, are you sure?" Replied Harry. "We've only just got used to anal, it might be better to have a bit more practice?"

"Come on, prude." Luna reprimanded him. "Do you want to fuck your girlfriend or not?"

"I mean, only if you're sure?"

"I love it when you fuck my pussy, and I loved it when you came in my arsehole, why not both?"

Luna and Ginny stood up, once again casting the lube charm. Harry followed, all traces of protective concern vanishing upon seeing Ginny spread her labia in his direction.

"Get your cock in here, I demand to be fucked!" She shouted, half mockingly. Taking his position in front of her, Luna behind, they levitated their friend and gently lowered her again - spearing her on their waiting cocks. Struggling at first to take them both in, Ginny winced and groaned uncomfortably as she was stretched beyond anything she thought possible. Eventually, however, she adapted to the situation and they began steadily advancing and retreating in and out until she was incoherently begging them to go faster. Using magic to prevent ejaculation, Harry and Luna kept going for as long as Ginny required, occasionally grabbing each other's behinds or fondling Ginny's bouncing tits.

"Do you like that, Ginny?" Luna whispered into her ear seductively.

"Mmmhhh... hmmmff... ahhhhhh...!"

"Yeah you like it, you're such a slut! I love it!"

"I... uhhhh... please... my..."

"Harry, I think she wants you to strum her clit so hard it comes off!"

"I couldn't possibly refuse!" And drummed his fingers across her clit, fanning with an open hand until she shook and emitted a deep, guttural sounds from her throat - the combination giving the effect of daemonic possession more than an orgasm. However, orgasm she did - and harder than she had even earlier that night. Having two experienced partners deliberately and carefully caress her innermost parts with their enormous cocks, all while playing her clitoris like a guitar sent Ginny to a place she had not visited before: a euphoric culmination of her weeks of denial and edging, bursting from her sex with an energy and intensity to rival a higher power.

Lowering Ginny onto the floor, her legs still shaking and her thanking them repeatedly, Luna stood and positioned her cock above her mouth, beginning to wank. Harry understood the opportunity and took up position behind her, once more piercing her hole. They both sighed together as they participated in the final act of the night. Slowly increasing his thrusts, they worked together to build and build, already worked up from fucking Ginny. After only a couple of minutes, Harry ramped up his effort as he came - shaking his cock inside Luna he spilled his seed relentlessly for half a minute, spasming as he did so. His willing victim so enjoyed the sensation that she too felt a pleasurable tightening in her balls and came for the second time. Also spasmodically thrusting her hips - and in doing so prolonging both their orgasms - she once again jizzed all over Ginny, covering her face and tits in an unbelievable volume of cum. Crying out for mercy, astounded that such a powerful orgasm could be achieved by anal sex, she continued cumming and cumming well beyond the end of her ejaculation. Eventually calming down, she pulled herself off Harry's filthy cock and sat down beside Ginny, cum dribbling out of her hole, and continued stroking her softening shaft.