Koro-Sensei X reader (Re-upload)

Chapter 5

The bell rang for the end of the day and I stayed right where I was. Slowly everyone left and it was only him and I, I was getting excited as to what he wanted to see me about. He beckoned me over to his desk and saw that the paper he put to one side was mine,"Sir, why have you put my test to the side away from everyone else's? Not trying to be rude sir but have I done something wrong?" He smiled at me and said, "no no, not at all y/n, I just wanted to know if you would like to go over your test with me so that I can show you where you went wrong and how to correct it?" "Sure, may I just text my mum to tell her I may be a little late tonight?" He nodded his head so I did and we got to the test. He went at human speed and made sure that I understood everything perfectly. When we were done I got up to leave when he snaked one of his tentacles around my waist, instantly making me blush. He spun me round to face him and reduced the gap between us,"Oh and y/n? I haven't missed those looks you've been giving me, nor have I been misinterpreting them," he leaned in and suddenly kissed me. I was tense at first before I melted into the kiss, he bit my bottom lip, asking for entrance and I allowed it, his tongue explored every part of my mouth. When he broke the kiss, we were both very slightly panting he blushed and said, "meet me after school every day this week and I'll give you some extra tutoring ok? " He smirked as he saw my face, truth is, I was getting turned on by his seductive voice, "Ok," I whispered in his ear and left the classroom. I walked back home thinking about what had happened, god this was so wrong but it felt so right! When I got in, I said hello to mum before heading up to my room and locking the door, something I don't do often unless it's important and this time, it was. I stripped on the bed, leaving me in nothing but my bra and pants. I started groping my breast with one hand and stroking my already wet core with my other. I removed my pants and slid a finger inside myself moaning quietly as so mum didn't hear. I then put another finger in, still groping my breast and started pumping in and out, I started to feel a knot in my stomach and when it burst, I couldn't help but breathe out his name. I lay back on my bed exhausted before getting under the covers and falling asleep.