WARNING: Some VERY suggested content below

Reader-chan POV

"Ow!! Stupid door!!" I muttered as it hit my face (I actually crashed into it but I wouldn't admit it out loud). Once again, I tried balancing some boxes on my leg and arms as I tried to open the door and push it open only failing and dropping a box.
I groaned in the back of my throat before kicking the door open and throwing some boxes into the room before leaning down to get the one I had dropped.
Only, once I had turned around, the box was in someone's arms, outstretched towards me.
I looked up at the figure and saw it was Sebastian, smiling down at me. Did I mention he looks devilishly handsome in the survey corps uniform?
"I believe this belongs to you, captain" he smirked. I took the box from this arms and smiled at up at him.
"Thank you Sebastian," I said and leaned up to kiss his pale cheek. As I pulled away I saw a faint blush cover his cheeks and he cleared his throat.
"You're very welcome. If you needed help why didn't you simply ask me?" Sebastian raised and eyebrow at me as I walked inside the room and kicked the boxes to the side, chuckling nervously.
"Help? Pfft, I don't need help," I scoffed and looked at the pretty big room.
"Your stubbornness will be the death of me, my love," he sighed and stood beside me.
"This feels...different." I stated as I walked to the desk on the far left side of the room, next to a large window. This was going to be my office with my room next to it.
"Of course it is. You were promoted to a new position. It will take some time to get used to." Sebastian explained as he picked up a box from the floor and placed it on the desk.
I sat behind it, on a chair similar to Erwin's and placed my hands over the top of the desk. I nodded in agreement to his words.
"Yeah you're right. This is new to me...but what I meant was that there's this feeling that everyone is depending on me more now. And I feel like..." I stopped as I saw Sebastian staring intently at me. I gave a half hearted laugh.
"Sorry. I don't mean to just-"
"No. It's okay. Please, continue what you were trying to say. Remember, you can tell me anything, I will always be beside you," he smiled and motioned for me to carry on. Damn I felt like pouring out my feelings right now.
"Well...I...I feel like, if I make one wrong movement, everyone will get hurt from it. And that's the thing I don't want. You have no idea how it feels when a whole group of people die because of you..." I said softly as I remembered the one time where I was squad leader for the expedition and my group all died because of a wrong decision I made.
"Has that...happened to you?"
"Yes. It has." I closed my eyes tightly and clenched my hand into a fist.
"And it hurt me. Probably more that their family that waited for them to come back. I try not to think much of it now...but now that I'm chosen as a new leader, I know what to do. I've learned from my mistakes. And that's why I don't want to fail. I don't want to hurt anyone."
Sebastian walked towards me and hugged me before kissing my forehead, and placing his lips on my hair. I squeezed his waist and took a deep breath. His presence was soothing. He knew how to calm me down.
"(Y/N) (L/N) do you know what I thought of you after I got to know you?" He whispered against my hair.
I pulled away slightly from his embrace and frowned up at him.
"Sebastian? What are you talking about? What do you mean?"
"I thought that you were very brave, courageous, selfless and strong." He chuckled softly and caressed my cheek with his thumb. I blushed and continued.
"What are you trying to say?"
"I'm trying to say that you're the prefect person to lead people. There's something about you that makes people want to follow you. Yes, you have made mistakes in the past. But what's most important is that you have learned from them. Besides, I am sure the commander and captain levi have as well. (Y/N) I believe that you are a great captain."
I swallowed the lump forming in my throats and leaned forward, crushing my lips to his soft ones. I wrapped my arms around his neck and pulled him closer as Sebastian kissed me back and wrapped his arm around my waist and ran his other down my legs. I shivered and gasped against his lips as he pulled me towards him until I straddled his hips.
Sebastian took advantage and plunged his tongue into my mouth, making me arch towards him. I pulled away, blushing like mad.
Sebastian leaned down and placed his lips over my neck.
"Seb-Sebastian stop." I muttered.
"Hmm. Why?" He whispered and licked my pulse point.
"Because, anyone could walk in," I sighed.
"Let them," he purred against my ear, and pulled me upwards, leading me towards my bedroom. All sane thoughts left my head and I pushed the door open and placed my hands on his chest, pushing him on the bed.
Sebastian fell back wards but he propped himself on his elbows and smirked at me as his hair became tousled.
"Feeling frisky, my love?" he smirked. I shut the door and crawled on top of him, settling over his hips once more.
"Shut up," I breathed, before gripping his shirt and popping it open.
"Is that an order, captain?" he breathed below me as I ran my hands down his well built torso.
"Damn right it is," i said before kissing him again. I've missed kissing him like this. Lately I've been too busy to spend time with him, but now, he was here with me and I wasn't going to let him go.
"I love you. I love you so much," I said as I pulled away and kissed him again.
"I love you too. So damn much. I'm yours. All yours," he groaned and flipped us over.
"I've never seen you act like this," I smiled and brushed my nose against his, tousling his black hair even more than it already was.
"You make me go mad that's why. You should know that provoking a demon is the worst thing you could do." He breathed against my lips. Then, his eyes started flowing fuchsia.
I opened my mouth to say something but was interrupted by a loud knock on the door to the office.
I froze and pushed Sebastian off of me, quickly standing up and brushing off my clothes.
"Captain?! Commander Erwin asked me to deliver this report to you so you could revise it!" shouted Armin's behind the door.
"U-um I'll take care of it. You can just leave it there and I'll pick it up in a minute!!" I called out as I saw Sebastian buttoning his shirt up and standing up from the bed.
"Alright!" Armin responded and I heard a folder drop to the floor before the sound of footsteps began to fade.
"I believe we must continue our previous activity some other time, darling," purred Sebastian behind me and kissing my cheek once more before leaving the room and winking at me.