Italics for flashbacks
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Jimin was sweating nervously.

God, the horrendous subject will be the next one for them to take. He was breathing heavily, all the lessons and thoughts mixing inside his mind.

"Uh..you add first then divide..what how do you substitute that number again? Ugh, how do you do that addition of cosine?"

They were given little time to review and prepare, him writing down and practicing some equation he remembered with his home study with Mister Jeon last night.

"Ugh, I'd rather get fucked than have my mind fucked.."

Jimin was just worrying of his pride. What if the mastery level was announced and he was the lowest? Of course his Kookie would be disappointed on him and the shame, thinking about how shameful it is was giving him major creeps.

"Hey, 'min. Clear your mind first or else you'll forget all of it." He looked at his left side where Sigyn sits, smiling at him. Atleast, she wasn't nervous at all which somehow brought relief to Jimin.

"Thank you for the encouragement. Pretty confident today huh?"

He knows that he was pretty bad at math like him considering they were sitting on the front. Seeing her confident makes him that too.

"Hm! I studied hard on this subject last night. I don't wanna fail this year, I'm aiming for something big."

"Oh, your parents will reward you?"

"Not them, but maybe they'll give me too if I did it. Oh- the exam will start. Goodluck!"

They sat back properly, Jimin giving a quick prayer to pass and kissing his ring hoping for goodluck. Well, he considers it now as a goodluck charm. 

The papers were passed, and when he saw the exam he was wide eyed.

Multiple choices and the last part were problem solving.

The exam was well..he understood it, surprisingly. Just by looking at it, he has the feeling like he knew the answer to it.

'This is similar on what he thought me..just not exact. And he also had this on his previous quizzes that I failed before..'

He licked his lips and started to answer, trying to remember last night when he reviewed with Jungkook.

He was sitting on the wooden chair in front of Jungkook's desk back on his apartment, doing some exercises in Math as he was 'obligued' to do a review for him to atleast pass.

"Why do we need to do this again?"  Jimin scatched his head doing some solving on his paper trying to atleast survive and solve.

"Because you need to pass my subject." Jungkook replied while watching Jimin solve, trying to look on his main weak point in Math so he'll be able to focus teaching him there.

"Don't you want me to fail at first so we can be together for more longer? So you can have remedial classes with me?" Jimin was starting to make excuses so they would stop studying and just spend time together.

"At some point, I  wanted something good for you so I'm reteaching you out of pity. I wanna see you graduate with flying colors." He just sighed. If Jungkook was on his mentally 'Mister Jeon' state, he knew he couldn't do anything and just listen to his words and somehow comply on what he wants academically.

"I'm only bad at your subject okay? I don't even know why but after those letters appeared I fucked up. I barely even pass that."

"And to be able to pass you'll either study hard or study harder. Stop chatting with me, I'm still monitoring the time Jimin." He pouted. He missed their private moments where he still calls him his 'baby' or 'mochi'.

"Ugh, stop pouting. Fine. If we finish this early then we'll do whatever you want and I'll take you out for a dinner how does that sound?" Jimin's face lit up and suddenly started to answer faster than he can, desperate to finish it fast.

"Yah! Are you even thinking of what you're solving?" Jungkook got enough of it, in thought that it was a bad idea that he actually had to promise that early.

"Jimin. Stand over your seat." Jimin flinched at the dominance of the elder's voice leaving him no choice but to stand and obey him.

Jungkook replaced him on his seat, sitting there in comfort backing off a little distance from the table then pulled Jimin on his lap.

"K-kookie?!" His face was beet red while sitting on the teacher's lap, Jungkook's chin rested on his shoulders feeling his hot breath against his skin.

Jungkook handed the pencil to Jimin while guiding his hand like a child that he teaches how to write.

"I want for you to listen carefully to me." He just took the one to one and up close teaching to the next level, almost in the level of being intimate that he had to sit his student on his lap and guide him how to write.

"I-is this..u-uh.." Jimin can't react well, warm lips tracing on his neck that brought chills on his spine.

"Shh, just listen to me."

Their hands started to move while Jungkook was lecturing him, his eyes glued on the paper while their hands write then his heart beating louder than it should yet the moment was embarked on his brain somehow.

"Just follow the operation and the x, replace it with the number here in the f(x) you see. Now, you try."

Jimin had that 'eureka' moment, remembering how to solve some of numbers and even though it's all multiple choices, he finally got an answer for the first time that is exact on one of the choices.

"Just replace..and follow.."

He was smiling like an idiot while answering the exam, answering it with the quote of easy peasy lemon squizzy.

Mister Jeon did thought him well!

He moved on the other numbers with plenty time and he stopped when he saw the logarithm.

"How did he teach that again..?"

"I'll teach you logarithm okay? You got less than half of these on your last quiz." Jungkook was thinking of another way so Jimin can listen well to him and remember what he would teach.

Jimin did well on the last one because of his strategy, might as well think of another one.

He was still sitting on his lap while he was thinking what to dk.

"That one was hard!" He whined. He never understood the hard lesson.

"I'm breaking off the deal of our dinner tonight." He suddenly decided but of course, that one aint real. Just strategy again for the baby mochi to listen to him.

"W-what?! Why kookie? B-but I'm looking forward! I-i..i did what you want!"

"I'll make a new deal. When you listen to me and be able to answer ten correct answers on my exercises then I'll make us dinner. Twenty correct answers then I'll take you out tonight and be able to perfect or like 38 since it's forty items then I'll take you out tonight plus we'll go out for a date again next weekend, wherever you want even in another planet and I'll pay for all of it."

It was a rather big promise from him to make but if Jimin will atleast learn a little then let be it.

"A-and if I didn't do that?"

"Easy. We'll stop all of this and you leave my house then we'll never talk again." The thought almost made Jimin die, having no choice left but to agree on his condition.

Damn, he loved him enough now to stop all of it!

"A-alright..I'll listen well to you. I'll atleast make it ten so you won't leave me." He changed his position in Jungkook's lap, leaning on the side like a child in Santa's lap.

"Good. So let's start? There's a lot of decimals in this one but don't get scared. Confusing as it is to do it's just a matter of normal operations with given numbers. To tell you the truth, you can use calculators if you know how to press it. "

Jimin remembered his words and panicked a bit. He did bring his calculator today but no one uses it in the class yet, even the bit smarter ones hadn't use it yet.

Fuck it, he'll just ask the instructor if they can. He can't just bring out a calculator in middle of a math exam or else he'd be suspended or more worse.

If he can't then he can atleast do it a bit better. He atleast got for his Kookie to take him outside for a dinner date with him last night.

Jimin stood from his seat, asking the instructor if they can use calculators to give a ray of hope to pass.

"H-he said we can use calculators in this one.." he pointed the exam part for logarithm.

"Ah, alright. I forgot to announce earlier that Mister Jeon said that everyone can use calculators for that part. Thanks, I'll announce it now."

Jimin felt the new hope of passing, happily going back on answering his paper with a new ray of hope of passing the math exam for the first time in his high school life.

"I'll make him proud of me!"

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A week already passed after the exam, today, pretty little mochi was hanging out with Sigyn and Hobi since his Mister Jeon was busy.

Jimin felt a little lonely that they weren't seeing each other often but he understood why and that his Kookie still needs to do his job as a teacher to compute grades and check the tons of paper of his students plus the crappy commands and extra jobs that he needed to take from the head teacher's orders.

"I miss him a lot!"

He almost yelled at them, unable to take the feeling anymore making Hobi shocked and almost threw his food on Jimin's face falling off from his seat.

"What the hell?!"

Hoseok almost wanted to choke his friend that much with dick to shut up.

It wasn't the first time this week that he complained to them, almost every single minute even in chats and texts nagging them on his feelings on how much he missed him.

"Could you atleast make the day pass without saying the words 'I miss Kookie' and some sort of bullshit?! You don't even like to see him before!"

"It was on the past! I miss him a lot and he wasn't really feeling it these days. Everytime I look at him, he looks so tired! It feels like he was sleep deprived, or even more than that! "

"Said from the mouth of the student that planned to kill him before just because of test booklets and being sat in the front."

"Shut up! I realized that he did it for my own good and he was improving me on that subject. My Kookie was such a sweet guy to do that for me!"

"I really really really wanna push your head on Mister Jeon's dick sometimes. We know you're worried okay? But for your own damn sake, calm your ass off since he was doing his job well as a teacher."

Jimin just pouted at the fact. Jungkook is a teacher and his time was supposed to be given to many students, not just him although he really wanted to do.

He can see that he was dedicated on his job to educate dumb students with horrendous numbers along with his monstrous satanic ways of teaching and compute grades lower than the earth's core.

All he can do is to listen well to his lesson and try to study hard for him to be appreciated then keep their little secret together.

Pretty saddening to think but it's the truth.

"Why don't you be the one to treat him out?" She suggested to him.

She's right, he never treated him once. It was always him treating him for food, ride, dates and some gift like the stuff toys from carnival.

"But..I'm broke as fuck. I'm just a student and my mom just lends me the right amount of allowance for the week and I rarely have spare money to keep. Sometimes this school expense shit and more especially food gets in the way."

"You can treat him the other way. I mean..your Park Jimin, Mister Jeon's only weakness." Jimin raised his brow trying to decypher what she's trying to tell.

Was she telling about..?

"Hm, maybe you're right. This weekend I'll treat him if he's done with his works." He suddenly decided, biting his lip thinking of his plans for the weekend.

"Wait, wait. Tell me atleast on what's on your mind? You told us that you don't have money, how will you treat him then?" Hobi raised his brow at his bestfriend.

"Nah, you can treat a person without money."

The two never questioned Jimin anymore, it was his own plan anyways. They'll just help him if he's in need of ideas except money. They knew that he can handle it on it's own.

Jimin will think of his plan not once but twice or even thrice, as many as he can since it'll be a really special treat for him.

Let's just say that he'll start thinking on how to ready his own during intense actions.

"I guess it'll hurt but he can do it gentle with me." He whisphered on his own, thankfully his friends were back on being busy eating their lunches.

He'll just leave a message later for his Mister Jeon.

After they all finished their foods, they decided to walk back to their classroom and spend their the vacant period but they were stuck at the hallway, group of people jamming to see a result posted on the bulletin board.

"Oh, they released today the top twenty examiners per year level this midterm?"

All of them were curious on who made it to top one this time having Namjoon out of school since he was the consistent number one from his freshman days up to now.

"I'm sure that Jimin would be in the top twenty as always. Do you think you finally moved on from your rank ten and below? You can hold on before. It's just your Math that always fails you to go beyond ten." It was indeed true that he was always on that list, just can't exceed because of his stupidity in math before.

"I'm excited to know! Let's look!" Sigyn was excited than ever, pulling the hands of Hoseok and Jimin for them to see it all together.

Jimin was scanning the results, looking for their respective year level.

"Hm..tenth grade.."

He finally found it. He started from the twenty which familiar names were written then up to number twelve that he never expected.

"Woah, Hobi look! It's your name here!" He shaked Hobi's shoulders out of happiness that his bestfriend was finally there but Hobi didn't answer that confused him.

"Hey! Atleast answer me you jerk!"

Hobi has his jaw dropped while looking at the result, pointing the part of which number one was written.

"Yah, what's with that? Who made it to one? Goodness Hobi stop over reacting." He turned to take a look by himself.

                     Bang Highschool                   
       Top 20 Examiners for Midterm
                           

                   1. PARK, Jimin - 97.5 ℅
                   2. PARK, Sigyn - 97.2 ℅
                  
"Wait, what?!"

And that was the day that he never expected to come in his life as a student.

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ghad i dunno what came into my mind while writing this in school

btw i may not update for the next week or more, my midterms is coming and i'm still a mentally challenged idiot in statistics considering that projects were piling up too

oh. maybe i'll look for someone that can proofread this fanfic equation and if you're interested, just pm me. i never proof read and edit so maybe this time i try lol

btw thanks a lot for 2k votes :))