Author's Note: I'm pretty sure Toph never called Zuko "Sparky" but it's a name she's called him in a LOT of fanfictions I've read, and it stuck, so please excuse me if it does bother you! It stuck more than anything else. xD
There is a bit of a reference to Legend of Korra in here. x] Hope you guys enjoy! I've been working on making the chapters longer. I've had a bit of Writer's Block so I'm sorry if it's not as good as normal. Thank you to everyone who reads and reviews and supports this story, you have eternal gratitude from me!

It didn't take long before we were headed back to the Air Temple. We had gotten transportation, mostly in the way of Ostrich Horses and Dragon Moose. It was actually a pretty long journey, and I had no clue what was happening with Aang as Zuko and I continued traveling, and time droned on. I was irritable, often and Zuko never quite knew what to say- although he often just held me at night until I fell asleep.

Finally, we were decently close. The sun was just setting, the sky bathed in purple and orange light. Zuko and I dismounted, and I rifled through my bag and found a string, pulling it. A Bison Whistle popped out. Aang had given me a spare one years ago. I grinned at Zuko, who nodded, and then blew hard on the whistle… which made no sound, as always. And we waited. A few minutes later, Appa was landing in front of us, shaking the ground and scattering our Ostrich Horses. We let them go (I mean, they couldn't really be angry at the Fire Lord, and he paid them triple what two Ostrich Horses cost) .

We got on Appa, who grumbled happily and tried to lick me. I laughed, and rubbed him behind his ear. "Did you miss me, buddy?" I asked. "Yip, yip!" Appa grumbled, and rose into the air, turning and heading towards the Air Temple. It was a short trip, and soon, I was scrambling off of Appa with Zuko's help. "Where's Aang?" I asked the bison, who flicked his head toward the main area, where we lived… or really, where Aang lived, and I… used to live.

"Let's go," Zuko said. I nodded and we walked along silently. His hand brushed mine as we walked, and I know my anxiousness was palpable. As we drew closer, I could hear strange noises coming from the… bedroom? I furrowed my brows and crept forward quicker, Zuko at my side, before entering the temple, and peeking into the bedroom.

Aang was laying on the bed with a beautiful woman on top of him. She had creamy, tanned skin, hair darker than night and never-ending curves, and she was – they were… Well. Having sex. And Aang seemed to be enjoying it more than he ever had with me, his toes curled in pleasure and small noises escaping his throat as the woman hummed and giggled, her body moving fluidly on top of his, as if she were trained for it.

Zuko was at my side, holding my elbow- which was a good thing, because I felt the world shift, and I trembled, nearly crumpling to the ground. I vaguely heard a strange, whimpering noise, which I realized was me as the woman and Aang both stopped, and looked in our direction. Aang's grey eyes seemed glazed over, and the woman was so beautiful I could barely even stand it… and I had never been attracted to a woman.

"Katara…" Zuko's voice was soft, close by my ear.

"K-Katara!" Aang's voice rose to a nearly panicked pitch as the woman climbed off of him. The panic and pain in his voice and on his face were thrown off by his erection and nakedness. "What are you doing here?"

"What am I doing here…" I repeated.

"Hissastsu Nikuyoku," Zuko said, his voice strong. The woman whipped her head to Zuko, her eyes narrowing but a serene smile blossoming across her face. Her lips were full and rounded, bloodred against her mocha skin and silvery eyes. Looking at her made an ache bloom in my belly, a strange, wanting feeling that made me shift uncomfortably. Then Zuko's words struck me as if he had punched me. The demon.

"Excuse me?" The woman finally spoke, with a voice that was soft like the chiming of bells, with an edge that made Katara's knees want to buckle, but relaxed her all the same.

"You're the Demon," Zuko said. His tone was nowhere near accusatory, but factual. Anger whipped across her face like a summer storm, before she quickly regained her posture.

"Demon? Whatever could you mean, sir?" She asked airily. "My name is Yunru. I am a friend of Avatar Aang's, am I not?" She glanced at Aang, who had now sat up and covered his body. He nodded dumbly, but looked at me. He looked so strange… so off.

"Yunru, I know what you are. Give it up," Zuko's voice was dangerous, but the woman merely smirked and walked over to Aang, ripping the covers off of him.

"You must be mistaken…" She murmured, capturing Aang's lips in a kiss. His eyes rolled backwards and he moaned, a powerful, fulfilled noise- a reaction I had never once gotten from him. Yunru chuckled against his lips before straddling him, and Aang's hips twitched upwards. Yunru's slender fingers traced their way down his chest and abdomen, and she scooted backwards before grasping his member in her hand, following with her mouth.

After years of being married to Aang, loving him, treating him the best I could, some strange, probably demonic woman comes in and gives him everything better than I ever could… I shuddered, and felt tears dripping down my cheeks. I wrapped my arms around myself and looked down, trying to cover the outburst that was bound to happen- so instead, I broke into sobs, cursing myself violently. I hardly understood why it hurt, aside from the feeling of inadequacy.

"S-stop…" I heard Aang's voice distantly, but Zuko was rubbing my arms and murmuring comfortingly in my ear.

"Katara… Katara, it's okay. It is. Come on now. Calm down, you're giving the Demon what she wants…"

"K-Katara? What's wrong?" Aang asked. I looked up at him through a blur of tears.

"What's wrong? What's wrong? At least I had to decency to succumb to my lust outside of our house and our bed. At least I had the decency to tell you, and be honest with you. I come back to make sure you're alright because of a fucking Demon and yet you're in bed with some… some… ugly, made-up DOLL!"

Yunru hissed under her breath and pinned her eyes on me, but I didn't care. Aang's face was growing paler by the second.

"So… so you know? I don't think you- you even need my help, let alone want it! Thanks, Aang, THANKS!" I snarled, tears still falling freely. I was angry, upset and embarrassed by showing such a weakness.

Then I heard a barely incomprehensible noise from Aang, just as Zuko was turning me around to get out for a bit, and I craned my head to look at him. His tattoos were glowing a pale blue, his eyes encompassed by the same light.

"You… put… her… down…." Aang snarled to Zuko, whose eyes went wide.

"Woah. I'm helping her, Aang. Calm down,"

"You're stealing her! You already took her from me! And now she's hurting!" The glowing grew brighter as Aang rose off the bed, rocks flying through the Temple to surround him and flames erupting around the rocks in a cycle of air. I could feel water being drawn from my Waterskin, joining the boiling elements around Aang as he threatened Zuko.

"You-" I howl, turning and pointing at Yunru. "This is your fault! You're that Demon! By the Gods, give it up!"

Yunru lifted one perfectly arched, dark eyebrow and tilted her head back, laughing. It was a beautiful sound, like a brook babbling over rocks on a silent spring day, and it almost made Katara want to drop her defenses. "Oh dear, young woman. Katara, darling, I am no sort of Demon. It is nowhere near any fault of mine that you left Aang and he happened to find a more powerful, loving woman."

I was so angry it wouldn't have surprised me in the least if fire had come out when I drew some water, and flicked it at the woman violently.

"Katara!" Zuko growled, grabbing at me.

"You let her GO!" Aang's voice boomed, sending the hair on my arms standing up, as Yunru sat there, still so serene and calm.

"You're being controlled, Aang! This woman, Yunru, is the Hissatsu Nikuyoku demon! You've heard of her, I know you have! You just have to see it, Aang," Zuko was nearly yelling, his voice raised so Aang could hear him over the wind rushing around him, carrying the other elements with it.

"That's a LIE!" Aang roared. He hadn't lost his temper in… years. Since he was a kid. Since the war was still going on. "You TOOK her and now you're trying to brainwash me!" He snarled, looking at Zuko, and then doing something I never thought was possible, I never thought Aang would ever do. He lunged for Zuko, shooting a rock in his direction. Zuko's eyes grew wider than I had ever seen and I yanked him aside at the very last second, the rock hitting the wall behind us and spraying us with pebbles.

"Aang, stop it!" I cried.

"Katara… be quiet. You lied to me," Aang responded, launching a jet of blue-white Fire at Zuko, who ducked a bit but caught the fire, manipulating it through his hands and extinguishing it.

"Aang, listen to me. We will not fight you," Zuko continued. Aang howled again, thrusting ice shards at Zuko. He tried to me- he did- but was instead struck, and he yelled. I turned to him, and blood was gushing down his face.

"We have to go, Katara…" Zuko said, acting as if he wasn't bleeding immensely from his face.

"But-"

"Let's go!" Zuko snarled, ducking and grabbing me, yanking me away as Aang followed, yelling.

"How do we get off?" I wailed.

"Something I've been practicing for a while," Zuko responded, grabbing me and pulling me. "Jump on." He bent over and I stared at him, shocked, but scrambled onto his back. He took a running start and bounded off the Cliffside. Momentarily, I felt as though we were flying. Then we were falling, nothing but the sound of the wind rushing around me. Zuko was going to kill us both.

But then, I felt a strange lifting sensation, and looked around. I felt heat, and realized Zuko was literally using fire to keep us aloft, so we didn't slam into the ground. We weren't flying or floating, we were just slowing the fall, until we finally landed on the ground.

"W-what was that?" I asked shakily, as he put me down gingerly.

"A little technique I've been practicing. It's something I'm going to teach my kids, and my Grandkids."

"It's… unique," I managed.

"Are you okay?" He asked. I nodded.

"Are you?" The blood flow was stopping. "Let me…"

"No time. Come on. We're going to an Inn for the night, and headed back to the Fire Nation tomorrow."

"B-but-"

"We need to be more prepared, and right now, we need rest. We'll plan tomorrow, okay? Between Sokka, Toph, Mai and Ty Lee, we'll manage."

My shoulders slumped, and I could only agree as we trudged to the closest Inn. It was small, and run down, but it had a bed. And we gladly paid, walked into the room, shut the door and collapsed. I turned to Zuko, who was laying on his back, eyes closed. "Where did the shards get you?"

"I'm not sure…" He rasped. I sighed, and began peeling off his shirt, slowly checking every inch of him for wounds. He had many small cuts, and some bigger gashes that were still seeping blood, albeit slowly. I brought my hands down to his ankles and felt upwards, and he hissed in pain a multitude of times.

"I have to remove your pants," I said, trying to remain professional. Zuko nodded, and I removed his shoes, and then untied his pants, pulling them slowly and carefully from his hips, down his thighs and calves and off of his body.

Then, I got to work, pointedly ignoring Zuko's complete nakedness. I worked from his feet up, drawing the water up around my hands and healing cut after cut, stopping bleeding and healing the bruising. The water glowed a soft, pale blue, like the color of the Full Moon in the North Pole. Zuko sighed every so often as I moved upwards. His body was slowly relaxing as I made it to his stomach, and the upper half of his body. I was nearly exhausted by the time I reached his face, but I managed, and the cuts were healed, nothing left of them- for the most part. Some, like the gash on his head, left behind pale, shiny scars. I was studying the scar on his face, making sure I didn't need to heal it more, as I drifted my hands across his body for anywhere I missed. Zuko gasped in a breath, and his hips jerked. I froze, and looked down. I'd brushed against his penis- which was rock hard and pressed up against his lower stomach.

I blinked, and looked up at Zuko, whose face was tinged a pale red. "Katara, uh, sorry, I-"

"It's alright," I murmured. I was intrigued. I had only ever seen Aang's, which had a layer of skin around it, and was admittedly thinner, although still long. Zuko, erect, was much bigger and much thicker than Aang, and did not have his foreskin. I had the impulse to reach out and touch it, and the strange feeling that the lust that Yunru had transmitted to me earlier hadn't died completely yet. Or maybe it had and I just… genuinely wanted Zuko. So, I followed my impulse, reaching out and slowly grabbing the base, and moving my hand upwards. Aang had never really liked that- he was always so passive when we were intimate. But Zuko, on the other hand… I could hear him breath in sharply, then out heavily.

"Katara, really, you don't have to-"

"Shhh," I hissed, finding a slow rhyth. Zuko's hips shifted with my movements, and soon a clear liquid was leaking out of the tip. I used my thumb to smear it across the head, and jerked my hand up and down quicker. A strangled noise came from Zuko, and he bucked his hips even quicker. Suddenly, he seized up, reaching for me and pulling me awkwardly to him, halfway on top of him and halfway on his side, into a heated kiss.

"Ah… Katara, don't stop," He broke the kiss to mumble in strained voice. I nodded, and he kissed me again, his tongue darting out to lick my lower lip, requesting entrance. I obliged, and we were kissing passionately, tongues battling. His hands began making their way up my still-clothed body, and I shuddered under his touch, moaning softly against his lips.

"Ah- K-Katara!" Zuko growled, and I jerked my hand as quickly as I could, his member lubed by his own pre-ejaculate, gliding easily in my hand. His eyes shut, and his head rolled back, hands fisting in my long hair. He cried out one more time before shuddering, his seed spurting from the tip, covering his own stomach and leaving Zuko panting.

"Gods, Katara…" He groaned. "What are you doing to me?"

"It-it's the Demon," I sighed miserably, remembering Aang with Yunru and how the demon made anyone near her feel lustful. I was using a cloth to wipe the mess from his stomach, thinking. I enjoyed Zuko. I did. I got satisfaction, and a lot of it, out of having him bow to my touch like that, or making him smile. But that didn't mean anything.

He trained his golden gaze on me. "No, it's not," He growled. "It's not the Demon, at all. You know it's not, Katara." I couldn't respond, only shrugged. He made a noise in his throat, a feral noise, and moved so quickly I hardly saw him coming before I was pinned to the bed.

"Katara," He started, sighing. His breath smelled like a campfire, his body smoky and musky. "You are incredible. You're my opposite in many things, but I've always been interested in you. Your temper, your mind, your body, everything. You're beautiful, Katara, and I…" He balked. The words were coming out in a choppy way, as if he didn't quite know what to say or how to say it. "It's not the Demon, okay? Just… trust me."

I was so taken by the fact that Zuko had opened up- and genuinely cared- that I pulled his head down, capturing his lips with mine, in a soft, meaningful kiss. And in that moment, things really felt okay… for now. We soon fell asleep holding each other, curled under the blankets, a peaceful night after a horrific day that promised there was more hell to come.