Aah. The blissfully peaceful neighborhood of Cleveland, Virginia. It is 6:00 A.M., and so, there are no kids awake, leaving their parents in relative peace and quiet for the time being.

"Teach me!"

Well, I did say for the time being.

"No!"

OK, picture this. The Delightful Mansion. Then, move your gaze to the side. No, not that side, the other side, the other side! OK, good. That's the Dimalanta household, where Matthew, Yin, Haruka and Mason Dimalanta reside.

"I said, teach me!"

OK, ow, those voices hurt my ears. Who am I? I'm Mika Corella, Numbuh June-13 of the KND. Otherwise known as Numbuh 6.13, the author of this one-shot. So stop paying attention to me and pay attention to the yelling voices behind the Dimalanta home.

"I said no!" A boy's voice yelled.

In reply to his statement, a girl's voice – Haruka's – demanded, "Why won't you teach me?"

"You're a girl!" Mason stated plainly. "Girls and poisonbending don't mix!"

In response, Haruka harrumphed and glared at him with her midnight blue eyes, exact copies of those of her father's, Matthew. "Well, I'm a poisonbender whether you like it or not, so you have to teach me!"

"And what are the consequences if I don't teach you?" Mason hissed uncharacteristically, his black hair messed up because he tugged on it in frustration. It didn't help that he looked totally angry because he was wearing his favorite black t-shirt with a flame design on it.

Haruka smiled, well, smirked. She was definitely used to getting her way. "If you don't, Mum and Dad's gonna ban you from hanging out with Sheila."

Sheila Frantic was the daughter of Elijah and Marine Frantic, and was Mason's best friend and crush. It didn't help that the Frantics and the Dimalantas were family friends, and nearly always hung out on weekends.

Mason visibly paled. He cherished his moments alone with Sheila (because the last time they were alone, they found out that Dillon York had caught them making out in the Moonbase closet), and he didn't want his parents to actually ban him from her. Then, his fists furled and unfurled as he said, "You little-"

"Ah ah, remember about your temper!" Haruka's mouth curled up in a slight smile. Mason was so much fun to tease. "Sheila won't like it if you're a big ol' hothead!"

Mason sighed in defeat, but otherwise he reluctantly said, "Fine. I'll teach you how to poisonbend." Then, a thought suddenly occured to him. "Hey, Sheila's a poisonbender too. Why don't you want to learn from her?"

There was silence from Haruka before she replied, "I want to learn from you. You're my brother, and Dad's nearly always too busy to teach me good tricks. Mum's not a poisonbender, so I'm turning to you."

"Oh." Immediately, a blush graced his cheeks as he realized that Haruka was putting her faith in him, considering the fact that the girl nearly always seemed to be fighting with her twin brother about everything.

Haruka smiled before punching her brother on the shoulder lightly. "Baka (Idiot). Even though I fight with you, you're still my brother. And siblings always care about each other, right?"

"Y-yeah." Mason twiddled his fingers before suddenly he felt his twin sister's fragile arms wrap around him in a hug. Immediately his cheeks flared up in embarassment.

"Arigato, Kuya. (Thanks [Japanese] Big Brother [Tagalog])" Haruka said before letting go of her brother. She then – almost instantly – whipped her brother with a gust of purple poisonous gas. Mason was flipped over and he belly flopped onto the grass.

The boy blinked as Haruka teased, "Be alert, onee-san! Always be prepared!" Then, a smile crept over his face as he stood up and tut tutted Haruka before he showed her how to bend properly. "That's not how you're supposed to bend! It goes like this..."