Yukio x Reader

First Class

(A/N): hey guys, summer has started and I have no idea for this story. I love this story with my whole heart, but I can't seem to write it! This chapter is almost lewd so just a warning here.
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Your P.O.V

After waking up and getting dressed with Yukio, him in his normal black trench coat and me in a black skater skirt and a grey baggy sweater tucked into it, we went down to breakfast and then headed out to get cram school lessons ready. "I don't know why they put me as your helper, I suck at Demon pharmaceuticals. I'm a knight and a tamer. Definitely not a doctor! That's why I have you!" I laughed and squeezed Yukio's hand. He blushed and chuckled lightly as we walked down the cram school hallway, "Then maybe you'll learn something during class." "Naaaaaah, I'll sleep in the back." I teased as we entered the empty classroom. "Will I have to give you detention like I do the rest of the class?" He asked as he sat down at his desk about to go over lesson plans. "Does that mean I get to spend more time with you?" I asked as I sat on his desk next to where he was working. He chuckled and and patted my thigh twice, "Yeah, I guess it does." Then he went back to preparing for class. "Do you even really need a teaching assistant?" "Probably not, but if I get to spend all day with you then I don't mind." he smiled sweetly up at me from his spot in his chair. I blushed and leaned forward onto his shoulder. "I love you Yukio." I whispered onto his skin and kissed his clothed shoulder lightly. "I-I love you too (Y/n)." he blushed at my actions and words. "B-but if you're going to lean on my shoulder, y-you can't sit on the desk. I can't see my papers." I smirked and stood up, "So is this okay?" I asked as i straddled his lap. "(Y-y/n)!" he stuttered as his face blushed all the way to his ears. "Can you see your papers now?" I asked innocently and leaned my head back onto his shoulder. He only nodded and held my waist with one hand as the other scribbled down notes onto his teaching plans. "How are you not hot in this thing?" I asked as I unbuttoned some of his trench coat. "Y-You just get used to it I guess." "You're crazy, you probably sweat all day in this thing!" I giggled and pushed it off his shoulders. "(Y-y/n)...." Yukio questioned me. "Don't worry, I just wanted to play with your tail while you worked." I said as I leaned back and unbuttoned three buttons in the middle of his white shirt to feel the fuzzy black appendage. "O-Okay..." Yukio sighed in content and placed his head in the crook of my neck. "Aren't you suppose to be working?" I giggled and felt his tail unwrap from his torso and around mine. "Y-You know that a d-d-demon's weakness i-is his t-tail." Yukio stuttered as I ran my fingers through the tuft of fur at the end of his tail. "Of courseI know that, that's why I keep mine hidden!" I stated as I slid my fingers along his tail. I felt his body shudder under me and he let out a breathy moan. "(Y-y-y/n), class starts in 30 minutes. I need to get my lesson plans together." Yukio tried to protest. "Your lesson plans are done, like they're color coded and everything!" I said as I turned my head to look at his neatly organized desk. He chuckled at my observation and groaned as I slid my fingers closer to the base of his tail. "W-w-we can't do this here (Y-y/n), w-what if s-s-someone walk in on u-us." he gasped into my neck as I wrapped my fingers around the base of his tail. "Class starts in 30 minutes, who would be here this early." I giggle and slide my hand down the length of his tail, causing him to shudder again. "F-fuck (Y/n)...." Yukio cursed as he let go of my waist and groped my ass. "Y-Yuki!" I jumped a little, surprised by his vulgar words and sudden action. His nails were sharper than normal and his ears were starting to elongate. "Th-This i-is why w-we shoul-shouldn't do this h-here." he growled into the crook of my neck and started nipping at my exposed skin. "Y-Yukio, your t-teeth." I managed to gasp out. He paused and ran his tongue over his demon canines. "See what you do to me (Y/n)." he chuckled and stared into my eyes. His eyes were lit with an intensity I had never seen. They were almost aflame in blue. I smiled sweetly at him and wrapped my hands around his neck, resting my forehead against his. I sighed in content and closed my eyes. "Yukio, you are one of the most precious humans I have ever met. You know that." I opened my eyes just in time to see his face bloom into a bright pink blush that spread all the way to the tip of his demon ears. "I love you Yukio." I said and closed the small gap between our mouths. His hands, now with his nails retracting, let go of my ass and slid up my body until they reached the back of my neck and waist. He poured as much passion into this kiss it was almost overwhelming. When he pulled away his ears and teeth were back down to normal size. The blue fire from his eyes was calmer and his nails were no longer digging into my skin. "I love you too (Y/n)." he smiled and pecked my forehead. He then rested his head on my shoulder and I could feel him smile into my neck, "So much." "Are we interrupting something?" Yukio stood up and I barely caught myself on my feet before he grabbed me and pulled me close to him so I wouldn't fall. Bon, Konekomaru, and Shima had walked into the classroom. "N-n-no!" Yukio blushed and looked away from the three, adjusting his glasses. Koneko was bright red, Bon was looking away with a small blush and Shima was looking at Yukio in awe. "Yukio you have to teach me how you attract sure beautiful ladies!" Shima shouted and Bon smacked him in the back of the head. I laughed uncomfortably at the three and then turned Yukio's face towards mine. I gave him a quick peck on the lips and then separated our bodies to go sit and a desk in the back.
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Yukio's P.O.V

"Thank God they walked in after I had calmed down." was the only thought that passed through my head as I sat down in my chair again, motioning the three boys to sit down. "I'll have to get her back later for that." I smirked as I look up and made eye contact with her beautiful (e/c) eyes at the back of my classroom. She shot back a wink and then the rest of the class walked in, and class began.