"I've already told you everything—"
"I mean details. You only told us how you were created, and how you were destroyed. We don't care about that. We want to know what happened in between; like how you became associated with the military." Sin sat, finally and held her head in her palms.
"Do you remember the stranger that I told you about?"
"The one who saved you?" asked Al, innocently.
"Yes, Al, the one who saved me. He was in the military. When he found me, it was raining, and I was dying. He took me to Central, where some automail experts could look at my body structure and determine how to redesign my body with their automail. As it turned out, the man who had saved me was a State Alchemist, and once he found out my origin, he insisted that I take the exam to become a State Alchemist. I had no intention of becoming one of the military's dogs, especially since I had spent over two hundred years of my life avoiding and defeating them. But, as Fate would have it, the military threatened me: either work for them undercover, or go to jail for the rest of my humane life.
"I had no choice. I became an undercover agent for the military."
Both brothers were silent, then Ed spoke. "What made you so special…?" he murmured.
"Excuse me?"
"What made you so special that you were called the leader of the homunculi? I mean, every homunculus has its own special power. Lust can extend any part of her body, Envy can shape-shift, Greed could change his skin into any different surface, Gluttony can eat any human with one gulp, Wrath can transform his body into anything, and Sloth transforms into water. What could Pride do?"
Sin was very quiet, then she whispered, "I can bend the air around me to do whatever I want it to do."
"You mean telekinesis?" inquired Al.
"Yes, Al. The proper term is telekinesis, but when you look at it from an alchemist's point of view—"
"It's just a matter of bending the air molecules into a definite shape quickly to make it seem as if you are hurling a person across the room, but in reality, the air molecules are just pushing the person along at a very fast rate." Concluded Ed.
Sin nodded, impressed. "Very good, Ed. Of course, I didn't expect any less from the famous Fullmetal Alchemist."
"Don't try to butter me up," he said coldly, folding his arms. "I'm just stating the obvious."
Sin grunted. "All right," She stood. "Then let's see how you plan to stop it." She waved a hand and Ed was thrown across the room again. He slammed into the brick wall behind him.
"THAT WAS ANYTHING BUT FAIR!" he raged. Sin just shrugged.
"I'm trying to see if you can live up to your reputation, Fullmetal." She said the name almost mockingly.
Ed growled to himself, stood up, and brushed the dust particles off of his red jacket. "I'm ready for you this time!" he told her.
Sin lifted an eyebrow and waved her hand again. But this time, Ed clapped his hands together, slapped them onto the ground, and a brick wall appeared in front of him.
When Sin realized what was going to happen, it was too late. The force hit the brick with amazing power, and every single one of the bricks in the wall was hurled out of its place. All of them were going right towards Ed, so Sin reached out with her mind and started to make the bricks slow down until they were at a halt. One was only mere inches from Ed's nose when Sin relaxed and all of the bricks dropped.
"What the hell do you think you were doing!" Sin demanded, out of breath. "I would have thought that you would have had more sense than to have a brick wall in front of you with almost a ton of force coming at you at, at least, fifty miles per hour!"
"Wow!" exclaimed Al. "That was amazing, Sin! I've never seen anyone able to control molecules like that!"
"That's because no one's ever been able to." Ed said quietly. "That's some interesting power you've got there, Sin,"
"Thank—"
"But I have to ask," he added. "How are you able to use alchemy?" everyone was silent for a moment. "Wrath is only able because he has my arm and leg, but why can you use alchemy?"
"You know…I have to ask the same question, Sin." Al piped up.
Sin lowered her gaze to the concrete floor. "The red stones."
"Red stones?" Ed repeated.
Sin nodded. "You remember me telling you that the red stones that Dante gave me were faulty, don't you, Ed?"
He nodded.
"The stones weren't faulty in just one way, boys, they were faulty in several different ways. For one, I could control the most delicate molecule known to alchemists: the air molecule. Also, when the red stones left my body, I was only human, not a dead carcass. I could also feel all kinds of different human emotions, like greed, blood-lust, gluttony, pride, anger, sorrow, friendliness…even love." She lifted her golden gaze to look upon Ed, who quickly averted his gaze. "It is human emotion that gives us alchemic powers, Ed. The reason that the homunculi cannot normally use alchemy is because they do not feel normal human emotion. All they feel is their assigned Sin. Lust can not feel normal love, only lust. Greed, as he admitted, only wanted everything for himself. Envy cannot feel anything but the want for something that someone else has.
"But I was different. I did not only feel pride, but other human emotions. This was because the red stones that Dante had given me had not fully taken over all of my human genes. I don't know exactly what the fault was in the stones, but whatever it was, I'm thankful for it."
"As well you should be," came a voice from Sin's open apartment door. Al and Ed turned around and Sin looked up to see Colonel Mustang leaning in the doorway.
"Colonel," Sin stood abruptly to attention, and Al and Ed straightened to mirror Sin.
"At ease," ordered Mustang. All three relaxed. The colonel's brown gaze scanned the ruined apartment. "What happened here?"
"Sir, we arrived here not an hour ago, and the homunculus Lust was conversing with Sin." Ed told the colonel, whose eyes darted to the homunculus. "We fought her, but Lust escaped."
"I see," murmured Mustang. "And what of the brick wall?" he motioned to the crumbled bricks lying in a pile.
"That, Sir," Ed spoke again. "Was my fault. I demanded a test of Sin's alchemic abilities, and made the wrong decision of defense."
"Without a doubt." his voice was cold. He turned to Sin. "May I speak to you for a moment, please?" he turned to the Elric brothers. "In private?"
Sin nodded, as did the brothers, and they left. Sin and Mustang were left alone in the small, ruined apartment together.