cybercitizens asked:
How about a Pacific rim style mecha pilot AU where Anna has to reluctantly team up with her badass mech pilot anit hero sister to defeat a giant monster?

Anna wiped the sweat off her forehead and looked at Elsa. A smirk stretched her face when she saw how out of breath the elder was as well. Indeed, even their cardio was synchronized.

"It's not because we're drift compatible that you're forced to team up with me, you know." Grunted Elsa, out of anger and exhaustion.

Anna puffed, and placed her staff in position again.

"I don't like this situation just as much as you. But…"

She jumped forward and hit her, but Elsa naturally anticipated the blow and parried it.

"We can't deny the truth that we make quite a team."

Elsa grunted, and they kept fighting, yet they couldn't separate the score. It was tight, just like they expected it, and they also both hated it. Panting, sweating, they eventually decided to take a break, and Elsa grabbed a towel on a nearby bench to wipe her face. She took one of the water gourds disposed in the training room, and laid against the wall with a sigh. Anna slumped on the bench, and Elsa opened her eyes when she briskly slammed her back on the wall next to her. She frowned and looked at her younger sister, intrigued.

"I thought you didn't want to team up with me anymore. Why did you change your mind?"

"Well, you know that they announced that forecast of a Kaiju attack on the Atlantic Ocean for next week. So… There's some urgency."

A silence fell between the two.

"That's not the only reason, isn't it?"

Anna slightly grumbled. Elsa put her water gourd on the bench.

"We haven't stepped inside a Jaeger together since 3 months, Anna. And we haven't even talked to each other since that happened. Do you—"

"Why do you want to know my reason?" Exclaimed Anna, with an angry frown.

However, as she had turned her head to her elder, her eyes widened, because Elsa's face actually was filled with nothing else than love.

"I'm concerned. And worried. I want to know if everything's okay."

Anna stared at her, then puffed at the choice of words.

"This is exactly because nothing's okay that I knocked to your cabin this morning and asked for a training session. Don't you think it's time that we go over this?"

Elsa's tender expression vanished, to be replaced by an offended one.

"Oh, because it's my fault?"

Anna eyerolled. "I didn't say it was."

"But you understated it."

The redhead stood from the bench with annoyance. "SEE? This is what I hate about you. You can't have a normal conversation without getting all dramatic."

Elsa's jaw dropped. "You're the one yelling right now!"

"I'M NOT YELLING!"

"Uh-uh", pointed out the big sister with round eyes.

The two sisters were known to exaggerate everything. Anna sighed, and Elsa fidgeted with the towels on her shoulders.

"So you're still mad at me about what you saw during the mental link."

"Of course I am!" Frowned Anna. "You buried that memory of yours for so long, I have the right to be mad at the fact you hid it from me!"

Elsa nodded, eyes down, comprehensive. They both had a sad childhood, and thankfully they bonded a lot since they were adults, but there were parts that Elsa still wasn't proud about. Some very lonely moments in her teenager room, thinking about… Ending her days.

"You know you could have talked to me about it."

The elder had a sad smile. "Yes, you told me that plenty of times already."

There was a silence. "I really want to never lie to you again, Anna. I swear. But this is just who I am. Lying is… Even if I hate it… Part of me. And this also is something you know."

Anna looked at her with sadness. "Yeah."

She cleared her throat after another silence. "So, complementary team, uh? Stand side by side?"

"Yes", sighed Elsa. "I'm… I'd love to make a team together again. You said it earlier, our sync is undeniable. Together, we're heroes. Together, we're O.L.A.F."

"I know", sighed Anna. A smile appeared on her face. A smile of nostalgia, of pride. She had missed Elsa's motivational speeches. She had missed this feeling, this training adrenalin, this mutual support, even the O.L.A.F. codename.

Anna lifted her head to Elsa, smiling widely now, and Elsa reflected her smile.

"That's the happy sister I remember of."

The redhead laughed softly and stepped to her sister. She raised her fist.

"Operating Legendary Arendelle Force?"

"Operating Legendary Arendelle Force forever, baby."

They giggled and fist bumped, then resumed to their training session with excitement.