Teacher Levi X reader / lemon / smutty

Piano

Music. This you liked-
The teacher was tall and had dark hair, and you didn't recognise him until he turned around... Ackerman. It surprised you that he could teach music. He begun playing the piano as your class entered the room. It was beautiful, and you began to drift again, back into the world of non-reality and daydreaming, getting lost in his eyes. He set you the task of creating a new piece of music, and you weren't paying attention until he clicked his fingers at you, snapping you back to earth. What a shame, that was a good daydream too. You put on the headphones and begin randomly note bashing out a perfect tune. Suddenly the seat next to you was filled, and those dreamy eyes stared into yours, and there was a spark. A spark was all it took.
"May I?" His voice was deep and rich and soft, and it almost made you melt in your seat.
"Of course"
"Well play then, what are you staring at?" You blushed, and so did he. Sort of. He smirked, head down, looking at the piano, making you giggle just a little. He huffed. You wanted to know what he was thinking, what he wanted. As you began to play, he was clearly lost in your music. He took over the other side of the piano and began playing the most perfect duet, note for note. It was a moment not to be wasted.
"Stay behind after class. I need to talk to you."
"Yes, Mr. Ackerman" you reply softly.

*********
Time skip
*********
After class, you wait as he shows the students out.
"Mr. Ackerman..." you begin but he interrupts you.
"Levi. Please just call me Levi"
"Yes... Levi" you were hesitant at saying it, it almost sounded wrong. He leant against the table where you sat, almost next to you. He looked into your eyes, dreamy and soft. He bowed his head and smirked again, sending a shiver down your body. He tipped your chin up, so you were eye to eye, his finger on your chin, coming close and closer until he's almost touching your face.
"Levi"
"Y/N, I've only just met you and you're my pupil, but you're beautiful, and I can't stop thinking about you" he blurted softly into your ear, almost whispering.
"L- Levi"
He tucked your hair just behind your ear, placing his four fingers behind your ear and his thumb placed perfectly on your cheekbone. His large hands cradled your head. What's even happening now? What was this? His hands moves from your head to he piano, and he began to play the beautiful music you created with him.
"Why can't you be like this around other people? " This question was almost brutal.
"Because I only let Special people see the real me"
"If that is the real you, I'll show the real me in classes. If you do too..." he was hesitant but he would, and you knew he would.
"Okay, Levi." Your voice was soft and fragile. Much like how he had left you. Fragile.