This is quite a random idea that occurred to me when I was watching episodes of Hey Arnold a few days ago. For anyone who happens to be familiar with that show, it's going to follow the basic plot mechanics of episodes in which Helga (Azula) is going to be obsessing over and scheming up ways to get Arnold (Aang) to notice her without actually confessing her feelings. This is short because I'm not sure how it will go over, but I'll continue it for a few more chapters. There will be other characters, including Zuko as well as the rest of the Fire Nation family.
"Aang." She said the name like a curse, her lips curling back, her teeth barring, her fists clenching. "What a fool, what a weakling, what a naïve little over-bearing do-gooder. I hate him." She looked towards the sky, expecting it to acknowledge her declaration. "And yet..." Now she relaxed, head moving and eyes darting back and forth as she slipped around the side of the school building, away from prying eyes. She leaned against the brick, heart beating faster, cheeks flushed, as she reached into a pocket and drew out the locket, made of finely wrought gold and attached to a delicate chain.
"I love him." She confessed to the portrait cupped in her hands. "The way he's always helping others regardless of their gross inadequacies, the way he helps them compensate for the fact that they were born into inferior families and have no discernible talent or drive." She looked to the sky again, this time beseeching it.
"So why doesn't he notice me, Azula, the epitome of beauty, intelligence and potential?"
She pushed off the wall and began to pace, the locket in her outstretched hand. "I know I may not always be the nicest person in the world, or the most considerate, but surely that isn't the most important thing to him, is it?" She sighed. "Fortuna that has blessed me so, birthing me under a strong sign and gracing me with my glorious attributes, won't you grant me this one small desire, that Aang might notice me and look at me with desire?" She paused, her nail tracing her chin. "No, no. that's stupid." Then she snapped her fingers. "Yes! That's it! I'm smart, beautiful, clever. That's how I've gotten where I am, father's favorite, best in my class, ahead of Zuko and his tiresome, emo tantrums. Aang just hasn't noticed me because he's never really seen me at my best, never accentuating my womanly attributes, never trampling over those morons in class. I'll do it." She pressed the locket against her heart with both hands. "I'll show my love just how wonderful I really am, and then he'll be awestruck and powerless to resist me. I'll be like a phoenix before him, soaring from the ashes of my previous failures to shine." She closed her eyes and smiled, content with her plan until she heard footsteps behind her, and that tell-tale sound of heavy breathing and snorting. Bumi's grandson...she never remembered his name.
Her eyes narrowed. She could feel the breath on her neck. A few more steps and they'd be touching, front to back. Her arm snapped up, fist landing squarely between his eyes. As he collapsed in a heap behind her, she straightened her shirt and tucked the locket back in her pocket, smiling again as she did so. Truly the perfect plan.