Their parents came home just three days after Zuko forced his sister to watch the videos he recorded of their little 'affair.' He tried to hide his frustration and anger, but pretty much everyone in the world would have been able to see that he was in absolutely terrible mood, and it only got worse when he went to Azula's bedroom in the middle of the night, while Ursa and Ozai were sleeping. He had been so angry that, for an instant, he actually considered trying to break down her door or forcing her window open so he could get in and take what was his.

Luckly, he managed to control himself before he did something stupid, and his parents seemed to have misinterpreted his anger as a result of some fight with Azula - probably because she spent the entire week avoiding him, and even managed to convince Ozai to let her stay at Ty Lee's house for a few days. He managed to get a few precious stolen moments with her, and she didn't seem to be resisting as much as she had been before, but he every time, just as he was sure he would get what he wanted, they'd get interrupted and Azula would come back to her senses and run. Zuko was pretty sure that managing to take his sister to bed again would be a ridiculously difficult thing.

Until the night she barged into his room, locking the door behind herself, and so visibly nervous that for a second he was actually worried something bad had happened.

And yet, somehow, she managed to recompose herself, looking as confident as ever. Even the air around them seemed to shift when he saw her staring at him without bothering to hide the lust that seemed to be taking over her.

Zuko almost threw himself at her instantly, but forced himself to remember who was supposed to be in charge there.

"What do you want, Azula?" he tried to sound as cold and indifferent as possible.

"You know what I want"

"Say what you want or get out" his harsh words made her wince, like they had caused her physical pain.

"I need it. I need you"

"It's late, I'm tired, and you've tested my patience a little too much, sister"

She scoffed "You're never too tired or too angry for this. For me" she untied the knot on her red robe, letting it fall to the floor... and showing that, underneath it, she was wearing the 'clothes' he had bought for her - a collar, bra, panties, stockings and a garter belt.

Zuko immediately felt himself harden and his mouth ran dry as he took in the sight in front of him. She was, without a shadow of a doubt, the most beautiful girl he had ever seen and would ever see in his life. But he couldn't surrender to her. Not yet. He couldn't be the first to give in if he wanted to have any hope of his sister not suddenly turning the tables on him when he least expecting, as she often did.

"Thought you hated the things I did to you and the rewards I gave you"

"I did. Part of me still does" she admitted "But I can't help myself. I want more" she lowered her tone "I want to have sex with you again"

"Oh, now you want it?" He mocked, trying to keep up the act.

"What, and you don't?" she raised an eyebrow, a malicious smirk appearing on her pretty face as she crawled into his bed. He had to use all of his will power to prevent himself from immediately pulling her in for an embrace. When she rubbed his quickly hardening cock over his pants, he grabbed her wrist and made her stop, despite his brain screaming to just let her keep doing what she was doing "Come on, Zuzu. You know you want it. You need it"

"I'm not the one who's begging to be fucked" he retorted, which only made her offer him a smirk that both aroused and infuriated him.

"You don't want to take advantage of your little sister?" she asked, using an almost innocent tone, and looking at him with those sweet little eyes and that cute little pout that was slowly replaced by a wicked grin as she talked "You don't want to ravish me, knowing that our parents are sleeping peacefully, completely unaware of what you're doing? Clueless to the fact that their son is raping their daughter right under their roof again? " she sat on his lap, straddling him and sneaking her hand underneath his shirt, digging her nails into his skin and leaving marks. He couldn't help but let her "Considering what I'm wearing, even if they walked in on us and I told them what you did, they wouldn't believe me. Or maybe they'd think I deserved to be punished by you. Maybe they'd even ignore me if I cried for help..."

Zuko snapped, switching their positions, pinning her to the bed and kissing her furiously, rubbing his erection against her while she squirmed underneath him, tugging at his shirt, and wrapping her arms and legs around his body, keeping him as close as humanly possible. He had never been more turned on in his life. He had felt like he was out of his mind before, but hearing his sister teasing him, actively trying to make him lust after her, made him feel like he'd die if he didn't take her right then and there.

"Say you love me" he demanded, choking her with the collar and making her eyes go wide.

"I l-love you"

"Say you belong to me"

"I belong... to you..." she stuttered, and he wasn't sure if it was because of what he was doing or due to whatever was left of her fear. Either way, it pleased him a little too much.

"Beg me to fuck you. Beg for my cock, slut"

"Please... fuck me... fuck... me..." his sister wrapped one hand on his arm and use the other to try to push him off of her, struggling to get any air and squirming underneath him, making him even more aroused. Once he finally allowed her to breathe, she took a moment to recompose herself, then grabbed his hair and made him lean in "Fuck me... rape me... do whatever you want to me... I don't care... just give me your cock..."

Zuko smirked, pulled away from her a little, pushed her panties to the side, freed his cock and thrust it into her, swallowing her cries of pleasure in a kiss that quickly became all teeth and tongue. She kissed him with a hunger he had never known before. Like she wanted them to consume each other. Like her life depended on it. She snuck her hands underneath his shirt again and cruelly buried her nails on his skin, smirking every time she made him cry out... and fighting back her moans (or at least trying to) when he'd go deeper and harder in retaliation. As he started to pick up the pace, Azula bit down on his shoulder, trying desperate to prevent herself from waking up their parents.

"It feels good, doesn't it, bitch?" he taunted "Feeling your big brother take advantage of you? Acting like you hate it only to be forced to admit you crave it?

"Yes" she replied with tears in her eyes "Oh God, why does it have to feel so good?" she whined, meeting him thrust for thrust, walls squeezing him. Whenever he rubbed against her clit, she'd gasp and look at him with that cute, needy, desperate expression on her face.

"Do you like having your brother fucking your pussy? Claiming you? Turning you into nothing but a dirty little whore?"

"Yes!" she said, a little too loudly, and bit her lower lip, trying to control herself... but her hips kept moving, trying to get a bit more friction and to make him go even deeper. When he got it all in, being buried to the hilt inside her, they both struggled to keep quiet. The fear of getting caught made them both constantly look at the locked door, waiting for their parents to suddenly be standing right there. It was honestly terrifying, but the thrill of it all and their need for each other just wouldn't allow them to stop.

As he got closer and closer to his climax, Zuko's thrusts became more violent, driving his sister insane. Despite how badly he needed his release, he didn't let himself fall until he brought her to orgasm, feeling her body shake underneath his and then silencing both her moans and his own. Azula held him tightly against herself, and didn't let go until for a long time, even after he shot his first load inside her.

Once he was free, Zuko took off his clothes, pulled down her panties, and took off her bra, immediately taking her tits in his hands, fondling them before taking one nipple into his mouth, then the other.

"I love you" his sister said as gently ran her nails through his scalp, and it made him smile like the world's happiest idiot.

"I love you too, Zula" he kissed her right above the heart, played with her breasts some more, then pulled away "Turn around and don't make a noise"

"I make no promises" she teased, getting on all fours and getting a hard slap on her ass, which only seemed to please her.

Zuko pushed her down slightly, then pressed the tip of his cock to her asshole, pausing for an instant to see if she would complain or try to fight him. She didn't.

He smiled cruelly and started forcing it inside. Azula grabbed a pillow and sunk her entire face into it, biting it so her involuntary sobs wouldn't be heard. Every now and again, when he gave it to her a little too hard, she'd try to get away, only to then immediately stop herself and staying as still as possible, letting him enjoy ruining the little whore that belonged solely to him. As a reward, he brought a hand to her pussy, rubbing small, fast circles on her clit to make the whole ordeal easier on her, even if not by much.

He groaned in surprise as she suddenly started moving her hips wildly, making him go as deep as possible. 'Animalistic' would not even begin to describe the insane desire that was clouding his mind, and the knowledge that he wouldn't be able to really fuck his sister like they both wanted to was frustrating - and made him burn for her even more. The movements of Azula's hips and her muffled cries of pain and pleasure didn't exactly help.

Despite the danger, Zuko simply gave up on being cautious, slapping her ass, the sound of it and of his flesh against her echoing loudly through his room. The rough treatment made Azula struggle to hold back. It was all too much for the both of them.

Eventually, he felt her tighten up around him almost painfully and spasm as she came, pushing him over the edge as well. With her eyes red, her cheeks wet and pink, and lower lip bloody, Azula turned to face him and offered him a sweet, lazy, malicious smile "Thank you, dum-dum" she said, still a bit out of breath. She practically purred in approval as he started gently kissing her lower back and slowly moved upwards, sucking on her neck as he spooned her.

"You were amazing" he whispered in her ear.

"I'm aware" she bragged, and then chuckled as he slapped her thigh "Did I make you happy?"

"Yes. Incredibly so" he held her tighter, feeling her melt against him "This is the way things are supposed to be, Azula. We belong to each other"

She turned around to face him, bright sparks burning in her loving eyes "I wouldn't want it any other way" she pressed a tender kiss to his lips "My Zuzu"

He kissed her forehead and embraced her, feeling completely at ease and, for once in his life, actually satisfied.

For that night at least.