In celebration of Kataang being cannon for ten years (something a certain ship can't relate to) here are ten days dedicated to showing the purest love story I've ever seen. It's also worth mentioning that I'm actually on time for this year's week, and I plan on getting each and every one shot up on their scheduled day. So, here's the first of many to come.

Mythology

It was night time in Republic City, most families would be getting ready for bed, and that was no different for the family that resided at Air Temple Island. Although in their case it was more like trying to get ready for bed.

If Katara was being completely honest, she never would've thought that having kids would be so much work. There was Bumi, who at eight-years old was just as rambunctious and restless as his father. Then there was Kya, their beloved four-year-old daughter who was just as much as her father as she was of her mother. Lastly, there was baby Tenzin who at one month old was a reminder to his parents that three was it for them.

"I don't wanna go to sleep, momma!" Kya cried as her mother tried putting her to bed.

"But sweetie, you can't stay awake forever," Katara tried reasoning before calling out to her husband, "Aang, has Tenzin settled yet?"

At that, said husband came into her daughters room with their baby son over his shoulder and their other son clinging onto his leg. Despite the situation, Katara couldn't help but laugh.

"I get Tenzin settled, but Bumi refuses to do just that," Aang said.

"If Boom doesn't have to sleep, then I don't want to!" Kya exclaimed.

Katara sighed, "Sweetie, is there any way I could get you to sleep?"

"Hmm…" Kya trailed off. "You could tell me a story!"

"Story sounds fun!" Bumi agreed as Aang tried prying the boy off from his leg.

"Alright, I'll tell you a story," Katara conceded, sharing a knowing look with Aang.

"Yay!" Kya cheered as Katara put the covers over her.

"Now, as I'm sure you both know all of the benders learned their sacred art from something different. For the airbenders it was the Sky Bison, for the firebenders it was the Dragon, for the earthbenders it was the badgermoles and for the waterbenders it was the moon," Katara began.

"In the Water Tribe, the waterbenders draw their power from the moon and the ocean; Yin and Yang. For generations they have balanced each other with their push and pull, which has been the nature of their relationship for generations," Aang continued.

"However, Yin and Yang were not always referred to as the moon and the ocean. They were once humans, just like us," Katara said.

Kya gasped, "So there was no moon or ocean?"

Katara laughed, "No, there was. It just wasn't Yin and Yang."

"Legend has it, Yang was a waterbender from the north. Contrary to popular belief, Yin was actually an airbender, since Yang always represented the ocean while Yin represented the moon or sky," Katara explained.

"Like you and dad," Bumi noted.

"Yes, like dad and I," Katara agreed.

"While Yang was a waterbender from the north, Yin was an airbender from the Southern Air Temple. They met one night at a gathering in the north, and it was love at first sight. Yin and Yang were instantly drawn to each other, and they spent the night dancing away in each other's arms," Aang continued.

"However, they couldn't be together," Katara interrupted.

"Why?" Kya asked.

"Because Yin was betrothed to be married. While marriage in the North isn't as prejudiced as it was then, women were always expected to follow through with the traditions and marry the perfect man and by her tribes definition; Yang wasn't her perfect man," Katara explained.

"Not fair," Kya grumbled.

"You're right, Kya. It isn't. But still, Yin and Yang made every moment that they had together count and wrote letters to one another when they couldn't be together. Unfortunately, Yin's betrothed found out about their communication. Furious, Yin's betrothed hunted Yang down and killed him for falling in love with his supposed wife," Katara continued.

"That sucks," Bumi commented.

"When Yin found out, she was devastated by the loss of her one true love. Devastated, Yin abandoned her home and chased her love into the Spirit World, where they could finally be together," Aang explained.

"Up until that point in history, there had been no greater love than the love of Yin and Yang. In a way, their love related to their dance with the pushing and pulling, which they brought with them to the Spirit world. Because of their love, they became the moon and ocean spirits. Yin and Yang decided to manifest themselves into our world, giving up their spirit forms and immortality to become a part of our world, where they continue to swim around each other in an eternal dance to this day," Katara finished.

"How'd you like that story, pumpkin?" Aang asked his daughter.

"Loved it. I wanna love like Yang," Kya replied.

"Don't go thinking about love now, young lady. Your too young for that," Aang said.

Katara laughed, "Oh, let her dream, Aang."

"Why did Yin go with Yang?" Bumi wondered.

"Because she loved him, and she was willing to do anything for him if it meant being with her one true love," Katara answered.

"Without her counterpart, Yin was almost meaningless, which is exactly what happens when you disrupt the bond between Yin and Yang; they cannot function without the other," Aang added, sharing a look with Katara.

"Now that we told you a bedtime story, how about you actually go to bed," Katara suggested.

Bumi yawned, "Only because I want to."

"That's my boy," Aang said, leading Bumi out the room.

"Goodnight, sweetheart," Katara kissed her daughters forehead.

"Night, momma," Kya replied before drifting off to sleep.

Satisfied that her children were taken care of, Katara headed off to her room that she shared with her husband. It wasn't long before Aang joined her and the two climbed into bed together.

"Well, that was a good bedtime story," Aang stated.

Katara nodded, "I think Kya really liked it."

"I asked Boom what he thought of it, and he just said it was stupid," Aang said.

"That's Bumi for you. But he'll understand it when he's older, just like I did," Katara noted.

Aang raised his eyebrows, "And what did you realise?"

"That love was something that you had to hold onto, and you'll know when you find the one when you can't live without them," Katara replied.

"Like what we have," Aang said.

"Yes, like what we have," Katara agreed. "When you were shot by Azula during the war and you were out unconscious for weeks, I was lost without you. I could barely function and the only thing that kept me going was knowing that there was a chance to save you. That was when I realised you were my Yang."

"And you did," Aang squeezed her hand. "I realised you were my Yin from the beginning, since very early on I knew that I would do anything for you. At first, I thought that was because I cared about you. But I knew that what I felt for you was deeper than that."

Katara smiled as she gave her husband a kiss on the cheek, "And now our love will always be eternal."

"Not that it wasn't before," Aang corrected.

Sharing a smile with each other, the loving couple gave each other a tender kiss before retreating to bed, each thinking of the other as they did so. For Katara, she was glad that above all and through everything else, she had found her Yang and knew that she would do anything for him, just like he'd do for her.

There's the first one done and dusted. The story on Yin and Yang is an idea that I got from another fic that I've read, but I changed a few details of it to make it more suitable for Aang and Katara. Anyways, if you like that leave me review and check out my other works :).