Obey me! Oneshots and imagine.

Sensei || Mammon

Mammon x Reader
Your POV

"Can you please tutor Mammon? His grades are a mess, I'm sure you can tutor him. Especially his math is very low" Lucifer requested, you just agree with him Mammon on the other side, is complaining. "Yeah go ahead complaining about you're not that dumb, your GPA is 0.7, Mammon. You're a lot better in the first semester, what happened to the second?" Lucifer tells him back. Mammon doesn't have any option but to agree.

I followed Mammon to his room and sat on the sofa, Mammon sat down on his bed and play with his phone instead. Seriously? I approach him and pull him by his tie then I throw him on the sofa. "You need to study, look at all of these Fs. This is all because of your gambling and you never study" I lectured him, he just scoffs and takes his books.

"First off we're gonna start with this"

"WHAT, WHY CALCULUS?!!?"

"We're learning this, it's the first lesson we learned in second semester"

"I DON'T WANNAAAAAAAAA!!!"

"Not just this, you need to learn Algebra, trigonometry, statistic, Linear variable. Don't worry, I'm gonna make this studying session fun"

Time skip

"Ok Mammon, let's see what have you learn so far. I'm gonna write the answer on a small piece of paper and stick it to your forehead, you have to solve the question with your own brain" I explained, I wrote the answer on the paper and stick it to his forehead. "Okay mammon, if 9x +3 equals 21, find x" His eyes look up to think of an answer.

"First.... you need to subtract 3 from each side, 21 - 3 equals 18. Then divide both sides... by 9. The x should be 2." His answer is correct, I clapped and give him a high five. He smiled and got cocky, "It's so easy! A kindergarten kid can solve this"

"Okay then, I think you can solve this equation;  2|3x - 2| - 3 = 7" I gave him a question that is more difficult than earlier. "WHY IS THE QUESTION GETTING MORE DIFFICULT" He complained, he thinks hard and finally answers it after 3 minutes. "Add 3 to each side, so it would be; 2|3x - 2| = 10, then divide both sides by 2; |3x - 2|= 5. Then you add 2 again. 3x = 7 then divide that to 3. The x would be 7/3 " Correct.

"Trigonometry, Two friends, Kakyoin and Jotaro started climbing a pyramid-shaped hill. Jotaro climbs 315 m and finds that the angle of depression is 72.3 degrees from his starting point. How high is he from the ground?"

"I don't understand"

"I'll give you 2 minutes to find the answer, try"

3 minutes later he still playing with his pen, not knowing the answer. I take his pen and start explaining to him, "To solve m, use the sine ratio. Sin 72.3° = m/315, 0.953 = m/315. M= 315 multiply with 0.953. Answer; The man is 300.195 meters above the ground"

I gave him the same question with that topic until he can solve it by himself, moving on to others. We studied from 5 PM to 8 PM, finally, it's the last topic, but we took a break and eat our dinner then go back to studying he seems to enjoy it. I just gave him a normal quiz I have made and solve myself, but "Every time you solve one question right I'm gonna unbutton one button from my uniform" He immediately blushed, "W-WHAT?!" He asked you heard me. He solves it carefully, "I-it's not like I'm doing this so you can unbutton" The tsundere blushed.

There are 9 buttons on my shirt, 3 on my rad skirt. There are 15 questions on that sheet of paper, he solves each question carefully, thinking about the answer possibilities, the right formula. He's overthinking, the answer is right in front of his eyes, I gave him options. He just needs to write down the solution. 

Time skip

He's on the 10th question and got 7 of them right. He's probably panicking, "Calm down, clear your minds, it's not like I'm rushing you" I softly whispered to him. He stops shaking his leg and took a deep breath. My shirt is almost completely unbuttoned. 

Finally, he finishes with a score of 9/15 points. "Good enough" I slip his worksheet on my book, keeping it to report his progress to Lucifer. "Well, I guess I'll just have to fuck you wearing my skirt," I pull him by his tie and push him to the bed. I straddled him and giggled, I unbutton his shirt and run my hands on his torso. "Ahh, you're so hard"

I pull him by his collar and insert my tongue in his mouth, His hands crept up inside my skirt, holding my ass. He holds my head back and pants hard, "feisty aren't we" he said. He pushes me to the bed. His hands explore my body, belly to my thighs. Sliding inside my panties, rubbing me. He slides my panties down, spreading my legs, and kisses my thighs. "You're throbbing"

He kissed my sex, ohh it makes me throb more. My sex releases liquid every time he kisses it. Soon he started eating me out, his warm breath hitting my sex, making me blush a lot and release more. He licks me in circular motion, with his long hands he plays with my nipple.

"Ahh, I can-'t believe this... I'm fantasizing I'm your teacher, nghh" "I should call you sensei then" He chuckled.

"You're enjoying this aren't ya? Whatta slutty sensei you are. Seducing their student and use them for your own pleasure" With that his tongue spelling "Mammon" On my sex while he looks up at me with his gold eyes. Soon enough I cummed in his mouth, he swallowed it all and lick the remaining cum. "Sensei taste so slutty"

"Get on your knees sensei, I'm gonna teach you what you been missing" He jerks his dick off in front of me, telling me to suck it. I bob my head up and down, "See, I thought you know and can do everything. Sensei have to learn the subject first before demonstrating it to your student. Summary; Sensei is bad at sucking dick"

He sat down on the bed and takes my finger to demonstrate how it's done, he sucks and licks my fingers making me blush. It's like that, "Try again" I did it again as he instructed, he eliminates all the hair that gets in my way and pushes my head up and down. He's too thick, my gag reflex forced out all of his dick. I coughed, "Oh, ya have a gag reflex?" He wipes the saliva that's oozing out of my mouth with his thumb. "Just suck on the tip and let your hands do the rest"

Even his tip is too big for my mouth, it went in anyway. My hand jerked the rest off. "Aaah, this method works- mo-ore than the earlier one" He grabs the sheet, I fasten my movement. His legs are squirming and he's arching his back. A while later he cummed from my hand, his cum squirted on my chest and face.

He sits me up and licks the excess cum from my face and chest. He's too tired to move, he fells asleep. I put my clothes on back and tuck him. Going back to my room and take a shower later giving the study report to Lucifer.