
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/4983919.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      방탄소년단_|_Bangtan_Boys_|_BTS
  Relationship:
      Jeon_Jungkook/Park_Jimin
  Character:
      BTS_-_Character
  Additional Tags:
      Romance, Slice_of_Life, Fluff, Crack, Explicit_Sexual_Content, Slight
      Dom/Sub_themes, Sex_Toys, happy_bday_chimchim
  Stats:
      Published: 2015-10-13 Words: 3388
****** i’ll teach you, learn well ******
by xsxuxgxax
Summary
     Jimin is not good at math because is boring and complicate, Jeongguk
     offers to help him a bit.
Notes
     did this long time ago for another fandom but wasn’t happy with the
     results so I rewrite all over again, just to indulge myself mainly
     Happy B-day to Baby Chimchim ♥
 
Jimin puts the pencil between his teeth ogling at the worksheet math professor
Kang has given them to resolve. A way for him to know in what aspect they are
lacking of in the subject. Jimin hates mathematics though, with all his heart,
and he has no idea what he supposes to write in there. Like, what the fuck are
those problems about anyway?
He sighs and pouts looking at front now, he could ask Taehyung, that is one
seat away. Or ask Junhong, one seat behind. Or… Jimin takes a peek at his desk
partner, is one of the new boys in his classroom.
…And the boy has already resolved half of the questions. What the fuck? Is he a
magician? (‘Cause math looks pretty much like dark magic to him.)
“…Jeongguk, right?” he whispers.
The black haired male slowly averts his eyes from his own work to him. “Yes?”
Jimin smiles widely. “Can I copy yours?” He points.
The guy seems to think about it a little while Jimin just hopes he’ll say yes
–Jimin doesn’t notice though the way the other’s eyes travel up and down his
form. “Sure…” he finally speaks and Jimin is very, very thankful.
 
                                       ♥
 
It’s on a sunny Wednesday morning when Jimin sees Jeongguk approaching him, he
feels totally lost when the first thing he hears from the other is, “I can
tutor you.”
“…What?”
It’s the third week and Jimin has being relaxing in all his math classes since
Jeongguk, his new acquaintance, still lets him copy his work without he even
had to ask for it. And now Jeongguk is saying that all of the sudden.
“You need help for the upcoming test and I don’t think Professor Kang is going
to let you copy mine.”
Taehyung told him that too, not the tutor part, just to study for it. “I– I
don’t know anything.”
Jeongguk’s lips seem to want to curl upward but he keeps them still. “I know.
Come to my house this Friday, you can even stay for the weekend” Jimin pouts
“I’ll make sure you know everything you need for the test on Monday.”
Jimin agrees nodding eagerly, only because his dad already threatened him with
a whole month of nothing that he likes if he doesn’t do well on school.
 
                                       ♥
 
“You seem happy, I think.” Hoseok comments, looking back down at his lunch, he
hates pickles.
“I don’t know what you are talking about” Jeongguk munches on his own sandwich.
“Does it have to do with the little cute guy that always borrows your math
homework?” Namjoon smirks knowingly.
“You’re adopted.” Jeongguk glares at him.
“You are!” Namjoon shoots back.
Hoseok rolls his eyes and wonders why he still keeps on sitting with the two
bitchy brothers (besides: they are both adopted). “Hey Jeongguk” He catches,
just a few meters away, a group of boys heading to a table.
“What?”
Hoseok ignores Namjoon glaring holes at Jeongguk while cleaning his cheek
tainted with ketchup. “Call them!”
Jeongguk follows the direction Hoseok is pointing at, Jimin’s group.
“Call them!” Namjoon suddenly says too.
Jeongguk doesn’t have to be a psychic to know that Namjoon is now only aware of
Kim Taehyung. Yet, he is so no going to call them.
“Hey!” Hoseok yells.
Jeongguk is three seconds away to shove his tray at his face but then Jimin
smiles and says something to the other boys and not even thirty seconds later
Jeongguk is moving himself to the corner of the bench with Jimin almost glued
to his side.
And now they are nine on the table, Jeongguk recognizes Taehyung, Seokjin,
Junhong and obviously Jimin but not the others.
Taehyung introduces them, always the chatter “…and they are Yoongi and
Donghyuk!”
“I’m Hoseok!”
Everyone is quickly aware that Hoseok is directing his words at Yoongi only,
sitting next to him. Jeongguk rolls his eyes, internally pitying Yoongi’s
fate. 
And the conversation goes smoothly from there on, at least until an annoyingly
annoying voice comes to them. “Oh! Look what we have here” Some guy that none
of them have bothered to learn the name, “The queer’s table! Oh Taehyung-ssi
you should be more careful with who you sit with!”
Jeongguk’s arches an eyebrow, he’s almost sure Hoseok is going to stand and
kick the guy –because behind that wide smile and nice attitude, Hoseok is a
little bit of a violent person, sometimes. Just a little.
But, the first to stand is no other than Park Jimin. “I’m sorry, we would have
saved you a seat but your rotten homophobic poisoned ass would have thawed it,
whoever you are-ssi”
The unwanted presence storms off glaring at Jimin only to trip with Yoongi’s
foot –at some point he had stood up to get another  juice box, or maybe to get
away from Hoseok’s suspicious hands under the table. Jeongguk says nothing but
listen to all of them though he is kind of only aware of Jimin at this point.
Hoseok throws him a knowing look and Jeongguk really just wants to smother him
sometimes. He might be starting to develop, maybe, a tiny infatuation on Jimin
but that’s no one else problem. 
Sometime later, still at the table, Jimin accidentally puts his hand really
close to Jeongguk’s crotch when Hoseok accidentally pushes him. And that’s it.
Jeongguk is going to smoother Hoseok in his sleep.
 
                                       ♥
 
Jimin is literally lost. He has walked a lot and wants only to lie down and
have some cold water. So he takes a seat on the sidewalk and texts Jeongguk.
 
[14:28]♥Chimchim♥: HELP
[14:28] Math wizard ♥: What? Can’t find the house?
[14:29]♥Chimchim♥: HELP
[14:29]♥Chimchim♥: I’m in some corner n there’s a creepy yellow house across
 
Jeongguk finds him in less than five minutes; his house is in the other street.
 
“Wow!” the first thing Jimin says once he is inside. Jeongguk bites on his
lower lip and leads him towards the living room. “It’s a really big house.”
Jimin takes a seat on one of the sofas, a little awkward since the piece is
completely white and fluffy. “And tidy…” White walls where there’s no glass,
shining floors, extravagant lamps hanging of the equally white roof, almost a
sin to step on it or touch it.
“Yeah…my parents are like this.”
“And where are they?”
“Working. Namjoon is out too, for the weekend so, just you and me.”
In the little table across the couch, Jeongguk has already placed two text
books and his notebook with all he needs to be able to teach Jimin the basics
at first.
On his part, Jimin looks from the table to his face and back to the table.
“Pull out your notebook” Jimin tilts his head, his cheeks getting a little
pink. “You did bring something in that backpack, right?”
“…Clothes?”
Jeongguk sighs heavily, holding back a chuckle “I’ll give you one, wait here!”
He stands and Jimin watches him till he takes the stairs. 
 
 
“He is hot…” Jeongguk says to himself. And cute! His mind reminds him. “And a
complete idiot when it comes to math!”
Jeongguk kinda loves mathematics. He searches inside his closet for an extra
notebook when he hears something behind. Jimin has gotten himself inside his
room.
Jimin is inside his room.
Jeongguk is three seconds away from a heart attack, or a stroke. Or both.
Jimin is now eyeing the shelves, “Your room is bigger than mine” he pouts. “And
so much more awesome” he takes one of Jeongguk’s mangas and starts turning the
pages, “This one is nice!” he puts it back and goes for the ones above pulling
out the first that stands out.
Jeongguk’s brain processes rather slow the fact that Jimin likes them too. But
now Jimin opens the new volume and as he is passing the pages his face goes
from normal to his cheeks getting all tomato red.
Jeongguk snatches the manga out of his hands.
It’s yaoi.
“Oh…” Jimin immediately avoids the eye contact but soon his attention is caught
by others articles in the bedroom.
Jeongguk has let his walk-in closet open and now Jimin is getting in pulling
out the box where all his actions figures are and…and fuck! Next to that box
Jeongguk has–
Jimin is smiling at a goku tiny figure when he sees a red and black box, inside
there’s a black one with just a big fuchsia bow. He tilts his head and reads
some of the words that are not on English.  “…for your submissive partner,
nothing better than pink and leather. Nya?” So motivated by his curiosity,
Jimin grabs the box and opens it –he has a lack of respect and boundaries for
other people’s property obviously.
He pulls out a pink thick collar and out of the box also comes a pair of pink
cat’s ears and a tail with a funny looking shining end and a remote.
Jimin honestly has no idea –maybe Jeongguk has a cat costume somewhere.
On the other hand, Jeongguk is still behind him, notebook forgotten and a
clenched jaw.
Jimin looks inside the big black box again and pulls out one of the little
bottles that are inside as well, “Strawberry?” Another pout. “I can’t read the
rest that’s on English” he turns to Jeongguk.
“It says lube…” He replays simply.
 
Jimin knows what lube is.
He…he knows what lube is.
He hurriedly lets the things back inside and stands quickly.
 
“You found the notebook?” His cheeks are flaming red and his voice has risen
even higher.  
“Yes.”
“Let’s study then!” Jimin doesn’t recall saying that phrase ever before.
“…Yeah”
Jimin is out of the room and down the stairs straight to the couch again in no
time, remembering all those times when his hyung has told him to not be nosy.
Jeongguk only comes a couple minutes later but Jimin doesn’t lift his gaze from
the huge text book he has on his lap now and from which he understands nothing
at all.
Jeongguk holds back a sneer. “Let’s start then…”
He starts with polynomials and equations.
Jimin has a hard time but after two hours he finally gets it.
“You want something to drink?” Jimin nods. “Look at me.” It’s almost a whisper
but Jimin hears it and his gaze finally shifts to the other’s eyes. Jeongguk
nods slightly, satisfied and goes to the kitchen.
Jimin starts to type fast on his phone.
 
[17:48]♥Chimchim♥: HYUNG!!!!
[17:48]♥Chimchim♥: I found Jeongguk’s stash of dirty stuff!
[17:48]♥Chimchim♥: WHAT SHOULD I DO??
[17:52] TaeTae^^: what does he have?
[17:53]♥Chimchim♥: has lots of lube bottles n
[17:53]♥Chimchim♥: I think I saw some stuff like the ones Yoongi has
[17:53]♥Chimchim♥: and a collar.
[17:54]♥Chimchim♥: IT WAS PINK!
[17:59] TaeTae^^: OH! He likes kinky!
[17:59] TaeTae^^: good for you, Chimchim.
[18:00]TaeTae^^: gotta tell me all the details later, k?
 
Jimin can’t type back anything else because a cold can is pressed against his
back making him jump and hiss, “Ah!” Jeongguk smiles and hands it to him. Not
apologizing. Jimin takes it looking back down.
Jeongguk goes away again.
Jimin is starting considerate whether he should get back to his house or spend
the night when something is being pressed on his neck. He looks up at his right
and sees Jeongguk’s grin. Then he looks down and sees…pink.
Jeongguk’s breath hits the side of his neck when he leans down at his ear, “I
might have something else to teach you too.”
 
                                ------ ♥ ------
 
The sight of Jimin in the middle of the bed with two fluffy black and pink
triangle ears on top of his head, a collar around his neck and a vibrating tail
stuck up his ass is just too much.
Jeongguk thinks this is one of the best wet dreams ever but– is not a dream.
Its fucking reality happening.
Jimin is on his bed squirming on his hands and knees and is so good to his eyes
and his cock that is twitching, still locked inside his tight boxers so
Jeongguk gets rid of the annoying piece of clothing left and gets on the bed as
well.
“Jeon---gguk” Jimin pants gnawing on his lower lip. “It’s…too m-”Just a few
seconds ago Jeongguk has turned it to the maximum. Jimin finally collapses on
the mattress, his dick rubbing deliciously against it; Jeongguk’s hands find
their way to his hips.
“You can’t cum yet” He says matter of fatly, the vibrations stop.
Jimin is so hard and wants to touch himself so badly, because apparently
Jeongguk is not going to do it anytime soon.
Jeongguk feels the warm of Jimin’s skin on his palms; his hands traveling down
his thighs and up again, to his waist and caressing his back. There’s a slight
tremor on Jimin’s body and there’s not even one single cell in Jeongguk’s body
that’s not thrilled by the situation.
Jeongguk picks up again the bottle of strawberry lube, the exact one Jimin held
before, that’s lying next to them and starts to coat his own dick. The feel of
his hand running up and down is soothing after all the time he has been just
watching Jimin falling apart.
Jimin’s breath hitches when he feels the tip of Jeongguk’s dick on the cleft of
his butt and then on his rim where he is all stretched around the tail. Does he
is seriously going to–?
Jeongguk clicks his tongue and his fingers start to caress his hole pushing the
cheeks apart for a better view.
Jimin feels really exposed and is so embarrassing that that fact only makes him
hornier about the whole thing. More eager for it. Jeongguk shifts a little
behind him and soon something wet is down there and Jimin’s face is so, so red.
Jeongguk is a pervert, Jimin momentarily thinks. “Jeongguk!” The tail is shoved
out.
Jeongguk’s smirking and squeezing his thighs as his tongue licks along his
crack. He’s not going to lie to himself, since first day he kind of got struck
by the presence of Park Jimin and he’s still a hormonal teenager so is
understandable that he might have started to fantasy about how tight Jimin
would squeeze his cock or how his mouth would look while sucking him off.
Jimin wrapped around his cock is actually way more amazing than whatever he
could have imagined. The tail is resting next to Jimin’s body and Jeongguk is a
little tempted to bring in up again but still…
“I’ll make you cum so hard, Jimin-ah…” he whispers while Jimin’s whining.
“Move…”
Of course he’s going to. He would have started slow but that is just not who
Jeongguk is. He pushes forward and Jimin moans in a way that’s so sexy to his
ears. Jeongguk keeps ramming against him and is just pure bliss. He tugs on the
collar as well, not too hard, and Jimin can’t keep quiet –good thing no one is
around.
The privileged view of his cock in and out Jimin’s hole is for him only.
Jeongguk cums hard biting his lower lip, almost ripping it a bit and he
instantly lets go of the collar when he realizes he tugged at it harder than he
intended to.
Jimin falls down boneless on top of his own cum, wet and sticky but he is still
too high to care for it now.
 
That’s what happens on Friday.
                                        
                                -------♥-------
 
Saturday is full with breakfast at 9 and then equations that Jimin understands
better than before which is a big improvement. Then at noon Jeongguk has a hard
time trying to make lunch by himself since Jimin apparently has no idea of
anything relative to cooking –he only knows the part when he can start digging
in.
Then Jimin goes through Jeongguk’s collection of video games and is around
three in the afternoon when Namjoon arrives and finds Jimin belly down with
hands tied up on his back and legs all spread with Jeongguk in between –and the
lovely pink collar back around his neck.
He, stuttering, tells them to be careful with the carpet, picks up some stuff
from his room and promises, with a bright crimson face, not to come till Monday
–all that in less than three minutes.
Jimin is all flushed in embarrassment while Jeongguk just keeps thrusting three
fingers up his ass –Interruption already forgotten.
 
                                -------♥-------
 
It’s on Sunday that Jimin is ready for his math test and also struggling with
his mind to make up a good excuse in case someone notices the slight bruises
that he is kind of proud of and he definitely loves.
He has spent all morning tied this time to the bed, the afternoon with books
and in the evening he meets Jeongguk’s parents –who were actually out of town.
Jeongguk takes him home around eight and the black car stays parked a whole 15
minutes outside Jimin’s house.
Jimin has aimed for a simply goodnight kiss but Jeongguk for an open-mouthed-
i’ll-take-your-breath-away kiss.
Jimin is not complaining at all.
 
(Later his mother notices the marks on his neck and assumes Jimin has a secret
lover and tells him to use protection before Jimin can lock himself in his room
after running to it).
 
 
                                       ♥
 
 
On Thursday they don’t have the class before lunch and Jimin is happy about his
B+, the results were finally given that morning, so Jeongguk rewards him on the
boy’s bathroom with his cum down his throat and on his face. 
Jimin licks along the head of his dick and sucks a little more making sure to
milk him dry completely. Jeongguk hurries him to get on his feet again to be
the one on his knees this time.
“You want me to?” of course he teases a little first, taking a hold on the
bulge on Jimin’s black slacks.  Jimin runs his tongue on his lower lip and
nods. “Use your words…”
“Please”
“Please what?”
“Suck me.”
Jeongguk loves the blush crawling Jimin’s neck till the tip of his ears. He
unbuttons, pulls down the zipper and then Jimin’s cock is out of his boxers,
rosy and pretty.
Jeongguk tugs at it slowly and gentle, is already rock hard. Jimin little
whines are making him smile and take some pity. He licks at the tip and then
the underside of it with a hand on the base and the other playing with his
balls. He takes it all the way until it touches the back of his throat;
Jeongguk can control just fine his gag reflex.
Jimin’s hands tangle on his hair, almost fucking into him wanting nothing more
than that hot and wet feeling. Jeongguk complies until Jimin is biting the
fingers he has pushed in his mouth to finally reach his peak. 
Some of his cum drips down from the corner of his mouth and Jimin is the one
hauling him up now to smash their mouths together willingly licking the white
line. Jeongguk is probably going to get hard again so they get out the stall to
clean themselves as best.
The bully from that once time in the cafeteria catches them leaving the
bathroom and makes a gag sound. He is utterly ignored so he stalks off to the
stairs. There’s no way he will ever go inside that bathroom again.
 
                                        
                                       ♥
 
 
Taehyung reminds Jimin he has to help with the preparations for the upcoming
festival, that’s how he ends up saying goodbye to Jeongguk once school hours
are over. Never being a volunteer for the student school council has been more
boring, his only relief is that the next day they don’t have classes due to
something he already forgot. 
His phone pings, Jimin looks down at it.
 
[16:28] Jeonggukie ♥: i got the car
[16:28] Jeonggukie ♥: parents are not around
[16:28] Jeonggukie ♥: (and bitchy face dumb neither. i swear he’s adopted)
[16:29] Jeonggukie ♥: i’ll pick you up!
[16:29] Jeonggukie ♥: wanna have a date?
[14:30]♥Chimchim♥: sure, you can bring that thing you bought too
 
(Jimin spends their date with a dildo up his ass while Jeongguk gives him
praising kisses from time to time “Just a bit more, babe.”)
 
 
 
 
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