I was woken up by the knocking at my door. I opened my eyes to realise it was still dark outside, the sun hasn't even begun to rise. I let out a groan and pulled the sheets over my head - one thing we didn't get enough of here was sleep, and I wasn't going to let any of my precious sleeping time go to waste. They knocked again, louder this time, and I decided I'd just pretend I was in a deep sleep if whoever it was happened to question me later today. I'd happily speak when it becomes an acceptable time to be awake. I closed my eyes and kept hidden under my sheet, freezing when I heard the sound of keys unlocking my door from the outside.

Erwin.

He had a set of keys to every room in the building, in case of emergency. At the end of the day, he was responsible for all of us. I remembered the conversation I overheard last night, something about some form of mission that Erwin wanted me to be a part of. I had fallen asleep last night thinking about what I would do. Hanji's words had put me off - she's the crazy one, and if she thinks is a bad idea, it probably was. Nothing is too bad for her...except this. I kept the blanket over my head and slowed my breathing, hoping he'd go away if he thought I was sleeping deeply enough. I was wrong.

"Petra. Petra, wake up. We need to speak, now." Erwin said, not even trying to whisper or be subtle about the fact he'd just walked into my bedroom to wake me at god knows what time in the morning. "Petra!" he snapped, pulling the cover off my face. I slowly opened my eyes and pretended I felt groggy from being so rudely awoken. I rubbed my eyes and tried to put on a tired voice. I had to pretend like I knew nothing.

"Wh- what...Erwin? What do you want?"

I opened my eyes properly as Erwin sat down on the bed next to me, letting out a sigh. I was suddenly aware of the fact that I only slept in my underwear, and pulled the sheet up around my neck, my cheeks reddening. For once, Erwin didn't notice my expression. He was staring at his hands, his eyebrows furrowed as he was deep in thought. His head shot up and he turned to look me dead in the eye. His hair was messy, not in his usual neat style, and he hadn't shaved yet this morning, slight stubble protruding. He looked even sexier than normal when he looked so dishevelled in the morning. He was in his boxers, with the exception of his trademark white shirt, not bothering to do all of the buttons up, the top of his chest in plain sight.

"I'm sorry to visit you at this time, Petra. This is just something I need to talk to you about in private. It's nothing for you to panic about, don't worry." he said, smiling at me, and when I returned that smile to him, he relaxed his shoulders and adjusted his position on the bed so he could be more comfortable. Having him on my bed, looking like he did, when I was hardly dressed was not good for my emotions. When I didn't respond, he continued his speech, which became blatantly obvious that he had it planned out before he came in. I couldn't tell whether that was sweet, or dangerous.

"I'd like you to come on a mission with us. It's not the usual kind of work the Survey Corps do, but you'd be perfect for it." he smiled, attempting to push his blonde hair out of his face, looking at me with his strong gaze.

"I did those tests at training for a reason, I wanted to see who was the fastest soldier, who could help me, and that was you. You won't be fighting, don't worry. All I need is for you to come with us and track someone. We're not sure what to expect from him, we've heard rumours, but we need to catch this guy. You can help us, Petra. I believe you're the only one who can help me." he said, reaching over to tuck my hair behind my ear.

I blushed and looked over at him, getting lost in his sky blue eyes, until his words really made sense to me.

"A-a man? You want me to capture...a human? We're not supposed to fight each other Erwin, that isn't how we live...right?"

"You're right Petra, I know that. Believe me, it's the last thing I want to do. The Military Police won't handle this, we're the only hope. He's dangerous, he's a menace to society, a thief, a thug, a criminal who survives purely on his wits and agility." Erwin put his arm around me and pulled me into his chest, the warmth of his skin where his shirt was open heating my face. "Only you and I can do this." he whispered into my ear.

"It's only going to be us?" I whispered back.

"Well, there's going to be other people there. Hanji, Mike, Dita. They're backup. They're not as fast as you or I, we're the ones who must follow him. The rest of them will follow on the rooftops, trying to track him and slow him down for us. I have it all planned out - there's absolutely nothing for you to worry your pretty head about." He leant in closer to me, muttering deeply into my ear. "So no...to answer your question, we're not alone. Except for right now."

His arm tightened on my bare shoulder as he pulled me over, turning my body to face him, my chest against his. It was then when he remembered I was in nothing but my underwear, as he looked down at me, a seductive smile on his lips.

"As your Commander, Petra, I'd recommend wearing something to sleep in. What if the Titans were to attack?" he teased, raising his eyebrows and tracing his fingers across my collar bones, biting at the corner of his lip. I laughed, not knowing what else to say. I slowly raised my arm to his chest and ran my fingers across the lines of his muscles, his perfectly shaped abs. I let out a sigh and closed my eyes as he kept his hand on the top of my chest, his other hand reaching into my hair, pulling my head forwards so he could kiss my forehead.

As I felt his hands running through my hair, across my chest, I realised this was the first time a man had ever seen me without clothes on. The first time a man had ever kissed any part of me, had touched me, the first time a man had been in the same bed as me. The first man I'd ever touched a part of. I felt butterflies in my stomach as the hand that was on my head ran down, tracing my spine and slowly wrapping itself around my hips, bringing them closer to his. His deep, husky voice filled my head and sent me dizzy as he whispered his next words.

"Do you want me, Petra?"

I knew that I did. From the moment I saw him, I knew there was something about him and I couldn't deny that it had been driving me crazy. Every minute I wasn't with him, I thought about him. I had wanted him to want me, and maybe he thought the same.

"I want you, Erwin." I whispered, looking up at him from under my eyelashes.

He brought his lips closer to mine, until they were only millimeters apart. It took all my strength not to lean in and grab him.

"So, will you do this for me? Will you join me in the mission?"

"I'll join you, Erwin."

I felt him smile as he wrapped his arms around me, burying his face into my neck, leaving soft kisses all the way up it. I closed my eyes, and let him. I had wanted this so damn much.

"Good. That means I can do this."

Erwin pulled me into him, and with one swift movement, placed his lips on mine. I felt the warmth as he kissed me, and I moved my lips to flow with his. He squeezed my hips and grinded his against mine, slowly adding his tongue into our kiss, my heart going wild as I threw my arms around his neck and copied his every movement. I ran my hands through his already messy hair, taking a moment to pull my head away and look into those eyes I loved so much. They sparkled with curiosity and delight, and I think mine reflected that too. He wasted no time in placing a hand on my ass, the other in my hair, pulling me in to continue our kiss. I freed a hand from around Erwin's neck and began unbuttoning the rest of his shirt, and he let out a deep, short moan as his hand around my ass tightened. We were in deep now, unable to tear ourselves away from each other.

Then the alarm sounded. The communal 'wake up' alarm that went off at 7am every day.

"Damnit." Erwin muttered, closing his eyes and pushing his hair back. He gave me one last quick kiss, a ten wonder on my lips. He stood up to button his shirt, his back to me, and he walked to my dresser to pick up a towel.

"I'm borrowing this, okay?" he said, wrapping it around his waist and turning to wink at me. "I can't be walking around with this on show. I guess you can see it at a later date, right? I just don't know if it's professional for me to rock an erection in the hallway. I'll see you at dinner."

Erwin left, leaving me breathless, unable to process what had just happened. I just had my first sexual encounter. With my commander.