The familiar ding of the elevator rang through the office building as the sun peeked out from behind the trees.

"Ah! Another day... Another case." A tall, slender young man said with a yawn as he stepped off the elevator with a steaming cup of coffee in his hand.

His regular work suit was in order but his two-toned undercut hair was stubbornly sticking out in different ways. His almond-shaped amber eyes flickered over to where his teams cubical were as he spotted two of his co-workers already at their desks.

"And by that do mean another night of drinking, Jean?" A woman with chin length black hair commented from behind her desk. She leaned against her chair with her combat boots propped up on the desk. Her calm, black eyes were locked on the knife she was cleaning until the man walked passed her.

"Ha ha ha. Very funny Mikasa." Jean teased as he stopped right in front of her.

"I don't see what's so funny about an obvious fact." Mikasa said in a monotone voice as she returned her gaze to her knife.

Jean narrowed his eyes as her before he turned on a short, small built blonde haired young man, who was snickering at Mikasa's comment.

"Marco again?" He asked as his large blue eyes scanned over his computer screen.

"So what if it was?" Jean snorted, "When was the last time you went out, Alert system?"

"Leave poor Armin alone, Jean." Mikasa huffed as she slipped the blade back in her pocket.

Armin torn his gaze from his computer screen and leaned back in his chair. He let out a small sigh as he rolled away from his desk.

"That's none of your business." Armin retorted rather shyly in response.

Jean just yawned in reply as he took another sip of his coffee. He disregarded the dinging sound of the elevator as it opened up.

Armin and Mikasa remained absolutely quite as a short statured man with a short, black haired undercut appeared. His suit was crisp, clean, and free of any wrinkles. His sharp, metallic grey eyes made him look terrifying, especially with the dark furrow that resided under them. He wore his usual scowl as he carried his thermos full of black tea in his hand.

"This coffee doesn't seem to be doing the trick." Jean said just before the man smacked him in the back of head as he walked passed.

"Maybe that'll wake you up." He muttered as he set his thermos on his desk.

"Ow... That hurt, boss." Jean muttered as he rubbed the back of his head.

"Good. Now gear u-"

"Levi!"

The short man looked up at the staircase when he heard his name. He saw the tall, broad shouldered, man looking down at him as his blonde undercut hair caught some sunlight peeking through the window. Levi gave a simple nod as his crystal blue eyes locked on him.

"I know, Smith." Levi muttered before he looked back at the three, "There's a dead Lieutenant at Trost Military Base. Kirstein you're with Arlert. Meet up with Moblit and check it out. Ackerman, you and I are going to have a little chat. Elevator now."

The three all looked at each other before their gaze fixed back onto the older field agent. That earned them all a menacing looking scowl from Levi.

"On it boss. Let's go He-Mini." Jean said as he grabbed the keys to their black company car.

Mikasa watched as the elevator closed, dropping Jean and Armin off at the ground floor before Levi pressed the down button again. She pressed her red scarf closer to his face, inhaling the scent as they stepped on. Her dark eyes met Levi's as the door closed and he flipped the switch that cut the elevator's power off.

"What do you want to talk to me for?" Mikasa asked, not being able to stand the silences anymore.

"What's rule number ten?"

The senior field agent simply asked as he leaned up against the wall with his arms folded across his chest.

"I don't see what that has to do with anything... Unless..." Mikasa paused for a quick second before her expression darkened, "What's the case?"

"A Lieutenant was found dead in her bed at Trost Military Ba-"

"You know something and you're not telling me so just spit it out!" Mikasa paused for a second after she realized what she had said with the tone that she used, "I'm sorry boss... That was uncalled for."

"No it wasn't. It was an appropriate reaction actually. She was your foster mother after all..." Levi replied rather bluntly.

Mikasa's eyes widened; she stared at Levi as her jaw slacked open. She was speechless for a moment before her voice finally returned to her.

"How do you...?"

"It was in your file." Levi replied quickly, "Now... Remember rule number ten."