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Yandere Katara

Summary:

Katara is madly in love with Aang and she'll do whatever it takes to make him hers. Set in a Modern AU.

Chapter 1: chapter 1

Chapter Text

It's a beautiful morning for Katara. The sun was shining with a clear blue sky as she walked over to the entrance of her high school. The new school year was starting, and she could not wait to see her friends especially her best friend, Aang. The two of them have known each other since elementary school and were inseparable. During the summer they hung out almost everyday until Aang had to go out of town with his uncle Gyatso to visit family out of the state for a couple of weeks before the new school year. Katara missed him terribly during that time and was giddy with excitement to see him again. As soon as she stepped through the school entrance she heard an angelic voice.

"Hey Katara!", she turned to her left and saw him walking up to her. Her lips curved up for a wide smile.

"Aang!", she ran up to him and threw her arms around his neck and held him tightly. She had almost knocked him over to the ground but Aang was ready. She was always like this whenever they met up, so he was always prepared for an impact. He hugged her back just as tightly.

"Geez, give it a rest you love birds.", said a female voice. Katara looked up to see Toph along with Sokka, Suki, and Zuko. Aang and Katara separated quickly with both their faces blushing.

"Quit teasing us Toph. Katara and I are just friends.", said the air bender.

"Friends don't hug the way that you two do. Katara doesn't even hug me like that.", Sokka responded. He had come to school earlier than his sister to meet up with Suki.

"Sokka, I see you everyday so there is no reason for me to hug you.", Katara replied to her older brother. "Plus, you stink most of the time at home."

The gang laughed. Although Aang denied that they were love birds, Katara wished that they had been. She had been in love with him for as long as she's known him. Before she met him, Katara had no friends and was constantly picked on by the other kids when her brother wasn't around. One day, a group of girls had dragged her to a corner at school where no teachers were around and had been pulling her hair and hitting her. She didn't know what to do other than to take the beating until she was saved by Aang. It had only been his first day at the school since he had moved in from out of state. He had noticed the girls take Katara away and decided to follow them only to see them hurting her. So, he ran up to them as fast as he could and tackled the girls away from the young water bender. As soon as Aang got up, he grabbed Katara's hand and ran to find the nearest teacher to help. He was her hero, her shining knight in honor and she had fell for him since then.

They had realized they had a lot in common with one another. They enjoyed the same type of music and reading a lot. Aang had always managed to keep Katara smiling no matter what and he was the only person she felt truly happiness. Before they met, she had been depressed since her mother had died in a car accident. She had not been able to connect well with anyone until she had met Aang who had a similar tragedy happen in his life. Before moving to California, Aang had lived with his single mother. He didn't know who his father was but didn't seem to care since his mother was enough for him. That is until she had died of a drug overdose. His uncle, Gyatso, had took him in as his he was his own son. They had moved to California to help Aang move on after his mother's death. Aang and Katara both knew what it felt to lose their mothers and became close because of it. They had both understood each other's pain and would be there for the other. Since then the two of them had been pretty close.

"So, what classes do you have?", Aang asked Katara. She brought up her class schedule and compared it to his. Fortunately, they had history, art, algebra, and English class together. Then they compared their schedule with the rest of their friends. They all had English class together for seventh period luckily, so they didn't have to worry too much about being alone with people they didn't know.

The bell rang for class and the gang separated except Katara and Aang whom went together to their art class.

"So how was the trip with your uncle?", Katara asked her friend.

"It was fun. It's nice to see my relatives but after a few days I couldn't wait to go back home.", he replied.

"Got tired of them so quickly?", she asked giggling.

"Kind of but mostly because I missed you a lot. We hang out so much that spending two weeks without you felt weird.", Aang replied.

"You couldn't handle two weeks without me?", Katara teased with a smirk.

"Well..um…I-I..", he stuttered with a blush on his face. 'Spirits, he's so cute when he's like that'. Katara laughed.

"I'm sorry for teasing you I couldn't help it. I missed you a lot too, if I didn't then I wouldn't have hugged you like I did earlier.".

"Katara you always hug me like that though", said Aang.

'Because I miss you all the time when we're not together. The shrine that I have for you in my closet has been the only thing that has kept me going while you were gone'. Of course, she couldn't tell him that, otherwise she would sound clingy. Even if that was the case.

"Really? I feel like I hugged you a little tighter today", she continued, "either way I miss you a lot Aang.".

They stopped walking and just stood staring into each other's eyes. Katara could look into his gray eyes forever if she could. She loved everything about him.

'Oh Aang…If only you knew how I truly felt about you. You are just so cute and adorable and handsome at the same time. That might not make sense, but I don't care. I love you so much my sweet little air bender. I just want to kiss you so bad right now, even maybe tie you down on my bed while I straddle on yo-'.

"AANG!", came a different female voice. Katara and Aang turned to see On Ji running up to them. She gave him a hug.

"It's been too long.", On Ji said while nuzzling her face on Aang's neck.

'THIS. FUCKING. BITCH'

While Katara had looked indifferent on the outside, she was raging on the inside.

'This slut better take her hands off of my man in five seconds or I'm going to grab her head and slam it on a locker.'.

"Hi On Ji.", Aang greeted the girl, nervously patting her back while she still had him in her arms.

'AAAAAAAANG, don't touch her. I'm the only girl you should ever be touching.'

On Ji finally let go of Aang although not quick enough for Katara's liking. She turned to look at the water bender. "Hi Katara", On Ji greeted her with a fake smile. They never liked each other but they both did love the air bender.

"Hey Aang, if you're not busy then would you like to hang out this weekend?", the brunette asked. Aang wanted to say no but he didn't want to hurt her feelings by outright saying it.

"I don't know On Ji. I think I have work scheduled this weekend, I'll have to check.", he responded.

'Aang I know you don't want to say no but just do it. Forget about her and keep looking at me. I want to be the only girl you look at.'

Katara just wanted to grab his hand and leave while telling On Ji to fuck off. The second bell rang just then.

"Well will you look at that? We'll be late if we don't hurry Aang", Katara grabbed him by the arm and dragged him with her to their first period class.

"Thanks for that", Aang was grateful to get away from On Ji.

"Don't mention it", 'Sweetie'. Katara as happy to take him away from her. Together they make it into their class before getting marked for being late.

At lunch time

Katara and Aang reunited with the gang at their usual lunch table. They were all talking and laughing at Sokka and Toph's banter until Suki brought up an idea.

"Hey guys, you wanna go swimming at lake Luna this weekend?". They all liked the idea of getting together and doing something fun but were not so sure about the location.

"I don't know Suki. The place has been iffy ever since what happened last year.", Sokka responded.

"What do you mean?", Suki asked.

"Oh yeah, you moved here after the incident at the lake, so you don't know about it.", Toph replied but Suki just had one more question.

"What was the incident?", she asked. The gang just looked at each other, the topic wasn't very comfortable. Finally, Katara answered her question.

"This girl named Koko drowned at that lake. She was our age and went to school here too".

"Ohhh… that's so sad", Suki replied.

"We were all there that day with most of the other students here partying. We didn't really know her that well anyway, she was just one of those people you just see everyday at school", Zuko said.

"To us but not Twinkle Toes", Toph said smirking, "As I recall she had quite the crush on air boy over here.".

Aang nearly choked on his sandwich, Katara pat his back to keep him from doing so. "That's not true Toph!", he denied.

"Yes it is. You may have been oblivious to it but not everyone else." Toph responded. Aang looked to his friends for confirmation and all of them except Suki nodded.

'Sweetie, I love you, but you really can be dense. But it's one of the many things I find adorable about you. It is kind of a blessing and a curse. A blessing because you don't notice their feelings for you but a curse for me because you don't see mine. I forgive you though because I just love you too much to be upset with you.'. Katara couldn't help but look at her love with adoration.

"I always thought it was weird though because I heard people talk about how she was supposed to be a good swimmer. If that were true then how could she have drowned?", Sokka said. The gang thought he had a good point but no one else had much to say on the matter. They all agreed it wouldn't hurt to go though as long as they were careful over at the lake. What they did not know was that only one of them knew the truth about what happened to Koko. Aang just happened to be sitting right next to her the whole time.

One year ago,

Koko had been like a pest that would not go away. She wouldn't leave Aang alone and followed him almost wherever he went. Katara just couldn't stand her.

'This bitch really has the audacity to try to take my soon-to-be husband away from me.', at this point Katara already was making plans for her wedding with Aang even though they were still in high school and he still wasn't aware of her love for him. 'She needs to realize that she will never be good enough for him. I'm the only woman he needs in his life.'.

The party at the lake was the perfect opportunity to make it clear to that bitch. Katara just needed to get her alone. The gang had arrived at the party right on time. The sky had darkened, and everyone was dancing, drinking, playing, and some fighting. The gang found a corner for themselves and just needed to change.

"HIIIIIIII AANG!", came a screeching female voice (in Katara's opinion it was screeching). Aang turned around and saw Koko walking up to him.

"How's it going Koko?", he asked the giddy girl.

"Pretty good. Party has been fun. How about you?", she responded. Koko made sure bring her chest up so that Aang could get a good look at her breasts. Much to chagrin, he didn't react to it at all.

"I'm good too. My friends and I have been looking forward this party all week, so I hope we have a great time.", Aang responded with a smile. Koko smiled back deviously.

"Tonight is going to be fun. No doubt about that. I actually got something to show you if you're interested."

"What is it?", Aang was curious.

"It's a surprise silly. Meet me at the far-right side of the lake over there in an hour", Koko pointed out to Aang where to go.

"Um okay then.", he said after a few seconds of thinking.

"Great! I'll see you later then", Koko walked away with a skip in her step. Katara had been listening to their conversation from a distance and heard everything. 'So it begins…'.

The gang changed into their swimming clothes and started their fun. Katara made sure to buy a new bikini for the occasion. She wanted to look sexy for her yet-to-be future hubby. The color of the bikini was bright pink. She had figured Aang would like this color on her. When she stepped out and showed him she could have sworn he had seen a huge blush on his face. Katara had received a lot of attention from the other boys and some girls at the lake with her bikini but she only cared for Aang's reaction.

"How do I look?" she asked Aang with a seductive non-seductive tone. She didn't want to make it obvious.

'Praise me Aang praise me!'

"You look amazing", Aang complimented her with a wide smile. She happily smiled back and took a quick look at him. He had only his swimming trunks on and no shirt on. Katara couldn't help but gaze at his body. He was by no means buff, but he still had plenty of muscle on him. She had to fight the temptation of pouncing on to him and having her way with him.

"Thanks.", she then remembered his conversation with Koko.

'How do I keep him from going?', Katara thought to herself. She couldn't let him go, who knows what that harlot was planning to do to him. Thankfully her big brother helped her come up with an idea.

"Yo I got us some kegs. Who's ready to get fucked up?!", Sokka came to the group carrying a huge keg of beer with them. 'Thanks big bro'. All Katara had to do now was get Aang drunk enough to forget about his meeting with Koko. He didn't have much of a tolerance for it so it was the perfect plan. Once the keg was ready, she filled up a cup for him and gave it to him with haste. Aang looked at her with a surprised look.

"Drinking contest.", she didn't ask him to do it, she was telling him. Aang decided to go along with it. He figured he could beat her but he would be wrong.

After the waiting time to meet Koko ended, Aang was already drunk. He started dancing with Sokka and Zuko, who were just as drunk as he was. Toph and Katara just watched and laughed at the goofballs. She decided it was a perfect time to get away.

"I'm going to the bathroom", she said to Toph who just gave her a thumbs up. Even Toph was feeling tipsy. Katara stood up and starting walking to the meeting point. She wasn't as drunk as the rest of them because she was only pretending to drink. She didn't like deceiving Aang, but she had no choice. She had to have a clear mind if she was to confront Koko.

She eventually made it to the meeting point. There was nobody else around which was convenient for her. She didn't need anyone barging in on her and Koko. She found Koko laying down on a blanket with her bikini off. Her eyes were closed but then she opened them and was shocked to see Katara instead of Aang. Apparently her surprise was to seduce Aang with her body.

"WHAT THE FUCK?!", Koko was freaking out and quickly put her bikini back on. "What are you doing here?".

"I just happened to be walking in the area.", Katara lied.

"Well go away then. I'm waiting for Aang.", 'Fat chance'.

"Aang's not coming here.", Katara replied in a flat tone.

"What do you mean he's not coming?", Koko asked furiously

"Because he's too drunk to come here."

"Well I'll just have to drag him here", Koko attempted to walk past Katara but was stopped when the water bender grabbed her arm.

"You're not going anywhere near him EVER again. Aang is mine.", She pulled Koko's arm and threw her down to the ground.

"Who the fuck do you think you are? His girlfriend?", Koko stood up to face Katara, "You're just his friend."

Katara just smirked at the girl. "I might not be his girlfriend, but I will be and then I'll be his wife and the mother of his children."

"BULLSHIT", Koko yelled, "he could never love you like I love him".

The water bender just stared at her. "What the hell do you know about loving him? I've known Aang longer than you have. I loved him ever since we were kids. I'm the only one that knows him best and what's best for him. Aang and I are meant to be together.".

Koko just looked at her in disbelief. She couldn't believe what she was hearing. As far as she knew, Katara was just Aang's best friend. Nothing more than that. So where was all this coming from?

Katara continued, "I'm tired of seeing you following him like a love-sick puppy. You have been nothing but an annoyance to me. I only let it go this long because I know how oblivious Aang can be with girls. But I can't let you try trick him just so you can get your slutty hands on him. This ends TONIGHT!".

"Oh PLEASEEEEEE! You're nothing but a psycho bitch in denial. You are not going to stop me from making Aang mine.", Koko threw a right jab at Katara but was too slow. The water bender took a side-step away, ducked down and pulled a sweep kick. Koko was knocked down to the ground again. This time Katara pressed down her left foot on Koko's chest to keep her down. The water bender makes a pulling notion with her arms and bends some water out of the lake. Katara bends the water over her head and looks down at Koko who was in a small daze.

"I told you…this ends tonight.".

Katara then bends the water above her head into a ball and brings it down on Koko's head. The ball of water engulfed her head, cutting her off from any air. The girl started to realize what she was doing. Katara was trying to kill her by drowning. She opened her eyes to try to look through the water and looked up at the water bender. What Koko saw horrified her. Katara was looking down at her with a look of delight in her blue eyes and a twisted smile. She then saw Katara open her mouth still smiling but this time laughing maniacally. Koko did her best try to get up and moved but Katara still had her firmly pressed to the ground. Koko wasn't going anywhere. With only water and no air in her lungs, she was starting to lose consciousness. Everything went dark for Koko and her thrashing stopped. The water bender smiled in delight to see Koko's body go stiff. She waited a minute before dropping the water ball off Koko's head, then she bent down and checked for a pulse. There was none, Koko was dead.

While Katara wanted to stop Koko from going after Aang, she did not plan on killing her. It just happened. She brought her hands up to her face and just started thinking over the sin that she committed.

'Did I really just kill Koko?...I did. But why? Koko was trying to take away my Aang. But does that justify me killing her? Yes…Yes it does! Aang is my soul mate and she was trying to steal him away from me. She deserved it. Now that I think about it…I don't feel bad about it at all. I'm not feeling remorse for it. It felt good. It felt RIGHT. Depraving her of air just felt amazing. She was my enemy and needed to be dealt with. Now I don't need to worry about her interfering in my life with Aang. He will still be mine. Now and forever…'

Katara looked back down at Koko's lifeless body.

'I can't just leave her here. It will look suspicious if someone found her body here. The authorities will find out she died from drowning, but it will look weird if just her head was wet, but her body wasn't. Sure it could look like someone forced her head into the lake to drown her but to do that they would have to look for a suspect. If they believe that then it could become a homicide investigation…unless her body was found floating in the lake. Yeah, that can work. I can make it look like she drowned. No one would question it if she was found floating in the lake'.

Katara had seen enough CSI shows to get an idea of how the authorities could find things out. The water bender stood back up and bent a large amount of water and made it into a bigger ball. This time she had it encase Koko's whole body and manipulated the water to carry the body into the lake. Katara placed the dead girl in the water and pushed her body farther away from the party that was still going on.

Now it was time for Katara to go back to the party otherwise her brother and friends might get worried. She ran back as fast as she could and slowed down to walk once she was back at the party. The boys were still dancing, and it looked like Toph had joined them. Aang saw the water bender walking back to them and smiled.

"Katara! Where you been? We missed you!", Aang drunkenly shouted. She just smiled back at him.

"I had to go to the bathroom Aang. All that drinking kind of got to me if you know what I mean.", she replied.

"Come dance with us". The gang was saying the same thing.

"Alright. Alright, I'll dance with you guys.". All her friends cheered as she joined them.

The next morning, Koko's body was found floating in the lake by a fisherman. It was all over the news and it was the talk of the school. Aang still didn't remember that he was supposed to meet her due to all the drinking he did. The authorities ruled her death as a drowning with nothing else to go off of. Katara was able to get away with it. Some were skeptical about Koko drowning because she was known to be a good swimmer, but everyone eventually just stopped talking about Koko and moved on with their lives with the exception of her family and friends. Nothing else came out of it. Koko wasn't coming after Aang anymore and Katara couldn't be any more happier.

Present day,

The water bender still did not feel any remorse for her actions. If anything, she was even more convinced it was the right thing to do.

The final bell rang and the first day of school was over. The gang walked out of their seventh period English class together.

"Finally, the day's over.", Sokka exclaimed. Zuko and Aang shared his sentiments.

"And we'll be back at it tomorrow so don't be too excited Sokka.", Suki pointed out. He just groaned in response.

"I'll meet you guys at the school entrance, right now I gotta drop off one of my textbooks at my locker", Aang said.

"I'll keep you company", Katara replied. Aang didn't argue, he was happy to have her walk with him. They talked on the way to his locker about the classes and the teachers they had. Once they got to Aang's locker, he got to opening it. Katara stepped back to admire him from behind.

'Not a day goes by where I don't think of you sweetie. You have a smile that lights up the room, an angelic laughter, and beautiful eyes. You always know how to make me smile and laugh when we're together. You have a one of a kind soul. Everything about you is just perfect…you're the perfect being. You were always my knight in shining armor, my hero. You have always been there for me and it's only right that I do the same for you. It is my turn to protect you from those whores that think they know you. Getting rid of Koko was the right thing to do and I'll do it again to whoever tries to get in between us again.'. Katara noticed Aang's backpack was on the ground, leaving his back exposed to her. She took a step and wrapped her arms around his waist from behind and rested her chin on his left shoulder and closed her eyes.

"Katara?", Aang was wondering if there was something wrong. He started blushing at the unexpected physical contact.

"I hope you don't mind." '…Sweetie.'.

"I don't mind but just curious as to why you're just randomly hugging me from behind?", Aang couldn't help it if he was curious. He wasn't complaining but he was still curious.

'It's because I love you silly. This year I'll make you sure you know it and then we'll be together forever.'.

"I just having a good feeling about this year and doing this felt right.", Katara answered.

"You really think so?", the air bender asked.

"Yes, I do."

'As long as that bitch On Ji backs off. But that might not be likely, so I'll have to deal with her…Personally.'