Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/13365828.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      F/F
  Fandom:
      僕のヒーローアカデミア_|_Boku_no_Hero_Academia_|_My_Hero_Academia
  Relationship:
      Bakugou_Katsuki/Midoriya_Izuku
  Character:
      Bakugou_Katsuki, Midoriya_Izuku
  Additional Tags:
      Rule_63, Cis_Female_Bakugou_Katsuki, Cis_Female_Midoriya_Izuku, Classroom
      Sex, Exhibitionism, Masturbation, Plot_What_Plot/Porn_Without_Plot,
      Possessive_Behavior, Female_Midoriya_Izuku, Female_Bakugou_Katsuki,
      Alternate_Universe_-_Always_a_Different_Sex
  Stats:
      Published: 2018-01-14 Words: 1696
****** class act ******
by savedetonate_(neverlasting)
Summary
     Katsuki is riled up and feeling petty, and Izuku is looking too good
     to ignore.
Notes
     This is just filth. Enjoy~
See the end of the work for more notes
Fuck that half and half bastard.  Really, who the fuck did he think he was
saying all that shit about Deku.  Her Deku.  Because Deku was hers no matter
what the stupid fucker liked to point out.
"Midoriya is her own person," her ass.  Like Katsuki was fucking blind to how
his eyes followed Deku as she bounced around like the annoying little shit she
was. 
Deku had promised her forever underneath swings and bed sheets and Katsuki had
done the same.  Like hell she was going to let some boy with daddy issues mess
up what they had.
===============================================================================
 
It was easy enough to take over Uraraka's clean up duties, crazy part-timer
that she was, and it was even easier to get Deku to agree to help her out after
class.  They've done this multiple times before and as long as either of them
didn't have anything too pressing to do afterwards, they rather speed up the
cleaning process rather than just wait for the other to finish. They hardly
walked home by themselves anyhow. 
Deku was judiciously scrubbing down the board, tiptoeing to get the corners but
missing all the same.  It was hilariously cute and Katsuki gave her shit about
it every single time.  But this time, she skulked up until she was behind her,
pulling perhaps the cheesiest shoujo move known to straight girls everywhere,
pressing against her until Deku was flush against the board.
"Deku," she crooned, tracing her nose from the shorter girl's ear to the nape
of her neck.  Deku shuddered and Katsuki didn't bother repressing a smug smile.
Her girlfriend took in a sharp breath but commanded sternly, "No, Kacchan. Just
no."
"What? I'm not even doing anything yet."
Shrilly, "Yet! You just touched my butt! We are not getting in trouble with
Aizawa-sensei again!"
Katsuki made a muffled noise of discontent. "That was one time and we were
caught during lunch. The damn bum should already be home or something."
"There are so many things wrong with that assumption.  Just—no, Kacchan.  Let's
just clean up and we can go to either one of our bedrooms and," Katsuki could
feel the flush crawling up the girl's neck, "we can do things there!"
"Things?" she chuckled. "Really Deku? As many times as I've had you on my
tongue and all the times you've begged me to fuck you harder, you still can't
even say the word sex?"
Deku wiggled until Katsuki finally allowed her to twist around, fixing the
blond with the most unamused stare. "Not the point, Kacchan. The answer is
still no." And just to make sure, "No."
Katsuki sighed and let her go.  Strolling back to the other side of the
classroom as Izuku returned to stretching to reach the corners of the board. 
She reached a specific desk and paused, deciding if Izuku didn't want to play,
didn't mean she couldn't.  Besides, just watching as Izuku struggled was just
one of the many things Katsuki loved to do and as the girl steadily outgrew her
need for help, Katsuki had to get her kicks from somewhere. That somewhere was
watching what little fat she still had on her ass bounce up and down as she
resolutely ignored the step stool hidden underneath the teacher's desk.
Katsuki let her legs fall open, not too wide because she didn't feel like
pulling her underwear off just yet, but enough where it would have had her
mother screeching at her to close her goddamn legs.  She’d prefer it if Deku
were here with her but she would deal.  She didn’t think that Deku would be far
for too long. 
She let her eyes trace the fine line of Deku's back, the way the setting sun
cast her green hair in a darker tint, and finally to the rising hem of her
skirt.  She always wore it so modestly, her Deku, not an inch under regulation
and thigh highs always carefully covered to look like tights rather than
Katsuki's favorite tease.  She never let her clean after class with anyone else
for that reason.  Those scant few inches of skin were hers and Izuku had a
habit of not noticing how her skirt rode up as she stretched. A pain to manage
when there were other losers around to growl at but a pleasure when it was just
her to enjoy the show.
Katsuki started off slow, tracing lightly up her thighs and back to her knees,
enjoying the drag of the calluses on her palms.  She thought about how much she
wished Deku would just let her play with her right now. How much fun if she let
Katsuki get on her knees and show her how much the half and half bastard didn't
know about pleasuring her. That no one could make her writhe and moan the way
Katsuki knew how with her mouth on her clit and her fingers knuckle deep in
her. Pussies, all of them. They probably would want to be gentle or go slow
with their fingers before shoving Deku onto their dick. Uncoordinated and too
much of a fucking scrub to hold out, to make it last, leaving her Deku
unsatisfied after what, a thrust or two? Three if she was being kind but
Katsuki was hardly ever the one to give anyone the benefit of the doubt and
teenaged boys were just—unimpressive.
Nope, she thought as she slipped past the fabric of her underwear. Katsuki
would never let Todoroki or any boy for the matter near her Deku if she could
help it.
She wasn’t that wet, but it was just enough to make it easy to slide two
fingers right in. She was tight, tighter than Deku even but that was probably
because she didn’t like getting fucked as much as her.
She loved Deku’s slutty little mouth and how she knew just the right rhythm to
flick her clit but she was iffy with fingers.  Sometimes she wanted it, but
other times she could do without.  It was once in a long while that she got
riled up enough to want anything vaguely phallic shaped anywhere in her rather
than wanting to see it disappear into Deku’s cute little cunt.
Katsuki suppressed a groan just thinking about it and instead, she let out a
little sigh that was more breathy and vaguely pornographic then she ever let
out in public.
Katsuki opened her legs wider and began to spread her fingers, opening herself
up the same way she imagined Deku would if she would just stop trying to clean
the board and instead came over to clean her. 
Preferably with her tongue.
She let out a moan, long and drawn out as she rubbed circles around her clit,
thinking about how good it would be.  Deku’s tongue wasn’t ridiculously long. 
Actually, it was rather dainty if she thought about it but she made it work. 
Instead of the same broad strokes Katsuki used to render her into an incoherent
mess, she was coyer, using kitten licks against her cunt and tracing along the
indents of Katsuki’s folds until Katsuki was all but straining against the
hands pinning her thighs down.
Deku was a fucking pervert.  Pretend all she could, but she liked it every time
she got Katsuki to beg. Beg to fuck her, beg to be fucked, beg for her to stop
fucking around and to finally wrap her lips around her clit and suck. Deku was
a pervert and a dick and people wondered why she was so mean to the little
shit.
Katsuki crooked her wrist for a better angle, pumping slowly and stroking where
she could reach. Her thumb was still working at her clit, but it wasn’t enough
because she was doing this to herself when all she wanted was Deku right where
she was, pinned down on this desk rather than with her back towards her.
Like hell was that board any more important than Katsuki was.  She should’ve
been finished cleaning it ages ago—oh. Katsuki smirked.
The little nerd still had her back to Katsuki, but she was cleaning the same
spot in tiny little back and forth movements.  Her feet were planted back on
the floor but she was squirming.  Only slightly, but Katsuki practically had a
sixth sense for when Deku was creaming her cute little panties. 
She leaned back and let her free hand fall loudly behind her body.  The hollow
thump from the desk sending the green haired girl jumping but not as much as
she did when Katsuki pulled her fingers out with a purposeful loud squelch.
The mortified blush on Deku’s cheeks was almost as amusing as the stuttered,
scandalized, “K-Kacchan?!”
“What Deku? Are you finished cleaning yet?” she asked cheekily as she trailed
her wet fingers down her thighs.
“I-I’m not—” she started before shaking her head and hotly hissing, “You
shouldn’t be doing that in school Kacchan!”
“Oh?” Katsuki raised an eyebrow the same time as she pulled aside the crotch of
her underwear.  “You only said I couldn’t touch you and I’m not,” she said as
she casually slipped her fingers back in.
And, as if bored, “If it’s bugging you that much then stop me.”
Deku was frozen and Katsuki was counting on her knowing it was a trap.  If she
really didn’t want to do anything then she wouldn’t come.  She’d stay where she
was at and either go back to cleaning or watch as Katsuki got herself off.
With a hiss, Deku dropped the rag in her hand.  She muttered something that
sounded like, “Please don’t let All Might check in,” and made her way towards
the desk, fervently glancing at the door and windows as if she expected someone
to peak in.  She stopped a foot away from Katsuki and huffed, “You are evil.”
“And you’re a nerd. What’s new?” Katsuki smiled, swinging her legs invitingly.
“Evil,” she repeated flatly before dropping to her knees.
===============================================================================
 
.
.
.
.
.
Todoroki rubbed at the surface of his desk, frowning at the slightly tacky
feeling.  “Sensei, may I grab something to clean my desk.  I don’t think it was
wiped down properly yesterday.”
 
End Notes
     Talk to me or send prompts @savedetonate on Tumblr.
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