"You just had to say something to ruin everything, didn't you?" he asked before crushing her lips with his own yet again.

"Yes" he heard her murmur in between their kisses, having her hands pinned against the door, then freeing herself of his grasp, touching him all over, then getting pinned again "And clearly I was right to do so. I love it when you get rough like that" she said as he started kissing her neck, and even the sound of her voice sounded a bit off, as it usually did when she wasn't in her right mind. He to admit, that part of him like that a lot.

She wants to me to be nicer to her, yet teases me. I want her to get better, but I get off on seeing her losing her mind, the young Fire Lord thought to himself.

That was pretty much the last somewhat rational thought he had that day. As he picked Azula up, threw her over his shoulder, and repeatedly smacked her ass as he walked towards their bed, he completely forgot about the world outside that room, and about how absurdly dangerous it was for him to punish her now that everyone knew he was mad at her and would be keeping a close eye on them. The following morning he would wonder if that had been his sister's plan all along, but on that moment the one thing on his mind was reminding her who was really in control.

Zuko threw her on the mattress and immediately started tearing her red dress, ripping it toff her body, then did the same to her panties and chest-bindings, immediately groping and biting her breasts, twisting and sucking her nipples, covering her pale flesh in bruises, hickeys and bite marks. He then made her lie on her stomach, undid her top-knot and pulled her hair, making her look at him as he leaned down to kiss her.

"How are you going to punish me, daddy?" she asked with a smirk and a devilish spark burning in her eyes after he pulled away.

"Be quiet" he commanded as he made her get on all fours on the bed, despite how much it pleased him to hear her calling him that "I don't want to hear you say another word today" he slapped her hard on the ass then walked up to his wardrobe, opening the chest that was next to it, picking up the old clothes that hid the many 'accessories' he could use to teach his sister a lesson. He smirked seeing her eyes widen as he moved closer to her again, this time with a riding crop in hands "Don't move or make a sound if you know what's good for you"

His sister immediately obeyed, and Zuko gently ran his hands though her ass before hitting her with the crop over and over. Azula managed to fight back her cries, but couldn't help but try to get away, even if just a split second whenever he left another mark on her delicate skin. He kept hitting her ass again and again, making it turn a nice shade of red, then, without warning, hit her with just a little less force right in her soaked pussy, making her yell.

"Seems you still can't follow orders. I told you not to move or make a sound"

"It wasn't my fault" she whined like the little brat she was, earning herself another strike, once again in her pussy, making her legs shake.

"Lay down and spread your legs"

Once again, Azula did as she was told, but the obvious annoyance in her face didn't please him one bit. He got some ropes and tied her up, not allowing her to move or close her legs. He also made sure to gag her, which made her give him an angry glare.

"I allow you to be a princess again and you reward me by disrespecting my authority and causing a scene to embarrassed the both of us. I truly am disappointed in you, Azula" for a brief moment, her furious expression softened, and Zuko saw genuine regret in her eyes "I was considering being a bit less strict since you were behaving so well, but now..." he pinched and twisted both of her nipples, seeing her grimace and hearing the muffled cries, then created two small sparks that made her body instantly react, involuntarily trying to break free of her restraints, to no avail "It seems I'll have to remind you that you're my slave"

Without another word, he hit her hard on her thigh, making her cry out, then hit the other, using a lot less force. He kept teasing her that way for a while, using gentler strikes before hitting her full force, seeing red spots appearing on her pale skin and her tears streaming down her face. But the best part was by far her brief expressions of pleasure. Sometimes it was hard to tell if Azula was frantically trying to move her legs because she wanted to get away, or because she wanted more.

Either way, Zuko was more than happy to keep giving her what he knew she needed. He would teach her to be a good girl.

Once her thighs were starting to bruise, he changed tactics, striking her on her breasts and stomach, being a bit more careful, giving her sensitive skin a short break. He did consider kissing her thighs, but decided against it. She didn't deserve that side of him, not until he was sure she had learned her lesson. Still, it was hard to resist that urge.

Zuko watched his sister close her eyes and tremble as he began sliding up her inner thigh, then heard her muffled moan as he used it to poke at her little clit. He smirked and started striking her again, without holding back, hearing her desperate cries of agony as he hit her thighs and cunt. Azula tried to free herself, but obviously wasn't able to, and Zuko enjoyed seeing her in such immense pain, completely unable to do anything but endure it. Yet despite that, she was only getting wetter, and after long, torturous minutes, he could see that she was close to orgasm.

But Zuko didn't let her come. Instead, he took off his clothes, freed her, and forcefully made her turn her around, pressing the head of his cock against her asshole and then pushing it into her. She practically howled as he did it. Even though he was sure everyone would have probably heard what they were doing already, he forced her to bury her face on the pillow as he bottomed out, feeling her tightening up around him. Unlike the other times, Azula immediately started pushing back against him whenever he pulled away, meeting him thrust for thrust and making sure his cock stayed inside her.

"You like this, don't you, bitch?" he asked, slapping her and then grabbed her hips, speeding up his movements "You like being abused and fucked like a cheap whore. You like it when I hurt you. You like it when I fuck you so hard you can't do anything but scream and cry" Azula's pace got faster as he kept talking " Such a good, dirty little whore. So fucking wet for me. You don't have to keep challenging me to get my attention, Zula. I'll rape you every single day if that's what it takes to make you behave" once again he could hear her moan despite the gag "Do you want me to cum in that tight little pussy?"

Azula started frantically nodding her head yes, and Zuko immediately pulled out of her ass and entered her cunt, rubbing her clit. Due to the previous punishment, this action brought her even more pain, but she still continued helping go as deep as possible. Zuko came inside her once, seeing his cum sliding down her thighs, but it wasn't enough to satisfying him, and he kept fucking her. It eventually became too much for his sister, and she started trying to crawl away, but that only made him redouble his efforts.

"This is your own fault" his touch and thrusts became for forceful, to the point that it hurt her so bad she couldn't do anything but stay sob as he used "You deserve this" Zuko continued his brutal assault, only slowing down once he noticed Azula had gone completely still and silent. He spilled himself inside her again once he realized she was unconscious.

He pulled out and removed the gag from her mouth, since it was no longer necessary. He pressed a tender kiss to her temple and cheek, then started fucking her ass again.

He'd make sure she wouldn't even be able to walk or sit down for at least a week.