Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/2728613.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Harry_Potter_-_J._K._Rowling
  Relationship:
      Sirius_Black/Remus_Lupin
  Character:
      Sirius_Black, Remus_Lupin
  Additional Tags:
      Rimming, Anal_Sex, Oral_Sex, Marauders'_Era, Modern_Hogwarts!_AU
  Stats:
      Published: 2014-12-06 Words: 1475
****** Potions ******
by DiaryofaMadTheaterMajor
Summary
     So, I know technically if a Hogwarts student was 18 they'd probably
     be done but let's just say the Marauders left Hogwarts at 18.
“Moony.” Sirius whined flopping down on the bed where Remus was laying reading
from his textbook. “You can read about centaurs later.” He pressed kisses to
had naked boyfriend’s shoulder.
“That’s what you said last time before you seduced me.” Remus muttered not
looking up from his book. “It worked the first time Padfoot but I really need
to study.”
“But your booty is drawing me in.” Sirius grabbed Remus’ ass and squeezed.
“There’s just so much of it.”
“Are you calling me fat?” Remus asked arching his eyebrows.
“No. I’m not.” Sirius ran his hands up Remus’ back and straddled Remus’ hips.
“I’m just saying your ass is amazing and you should let me plow it again.” He
kissed Remus’ neck who moaned softly.
“Sirius. Please.”
Sirius rubbed his cock against Remus’ ass, “You were so good at riding it, you
took it so well.” He whispered.
“How romantic of you, and I really need to study and I’ve lived with you and
James Potter for the past six years and so I can resist any and everything you
do.” He deadpanned.
“Yeah? What about Peter?” Sirius asked.
“Peter respects my studying time like I respect his. You should both take a
page out of his book.” Remus turned the page and his eyes scanned the page.
Sirius groaned and rolled off of his boyfriend. He moved closer to Remus and
wrapped his hand around his cock, “Fuck, I’m so hard.” He pumped himself
slowly.
Remus casually turned the page, “Lovely.”
“You’re horrible to me.” Sirius let go of his cock and sighed. He looked over
Remus’ shoulder. “Is it interesting?”
“Yes, it is. Don’t you have an essay for Potions to write?”
“I finished it.” Sirius suddenly found the comforter very interesting.
“Oh really?”
The black haired boy nodded, “Yeah, Peter and I went to the library yesterday
and we just finished it.”
“Then you certainly wouldn’t mind my proofreading it then.” Remus confirmed.
“Huh? What?”
“I’d love to proofread it. Certainly Peter would’ve been a big help.”
“Did I say Peter? I meant Evans. Evans helped me out.”
“Lily was with James in Hogsmeade last night.” Remus looked over at Sirius who
nodded.
“Interesting.”
“You didn’t do it did you? Sirius Black, you are already failing Potions.”
“I’m sorry that the professor favors Sniveillus other than us.”
Remus sighed, “I thought you were over this, Sirius.”
“I am but you know that it’s true. Just like McGonnagal favors you and Evans.”
“Because we pay attention in her class rather than pass notes.” Remus accosted
turning the page.
“Well if it wasn’t so boring.” Sirius groaned.
“You’re writing your essay.” Sirius answered with a whine, “Without my help.”
Remus added causing the whine to get louder. “That’s not very flattering on
you, my dear.”
“You owe me.”
Remus scoffed, “I owe you nothing.”
Sirius kissed Remus’ shoulder, “I need motivation.”
“Let me show you your term grades, that should be sufficient motivation for
you.”
Sirius kissed down the curve of Remus’ spine, “I was thinking something else.”
He kissed the cleft of Remus’ ass.
“Write it. Now.” Remus tried to keep his voice steady.
Sirius spread Remus’ ass and gave it one wide lick which was rewarded with a
gasp from Remus. He smiled and licked again, dabbing at the tight pucker of
muscle. He squeezed the bubble butt underneath him and moaned as he dug his
tongue deeper, feeling the muscle loosen. Remus was squirming underneath him.
“Shut the book and put it on the floor.” His voice was heavy.
Remus all but shoved the book off the bed and rolled onto his back. Sirius laid
down on top of his and pulled him into a hungry kiss. “You’re evil.” Remus said
breathlessly. Sirius chuckled and continued to kiss him and Remus wrapped his
arms around his boyfriend and deepened the kiss. “How do you want me?” Remus
asked.
Sirius thought of the countless ways he could fuck his boyfriend, “How do you
want it?” He challenged.
“I don’t care. I just want you to fuck me.” Remus gasped.
Sirius smiled and lifted Remus’ hips and buried his face in Remus’ ass, “God, I
love your ass.” He said licking Remus’ perineum and then stuff Remus’ balls
into his mouth. He rolled his tongue on top of the sac causing Remus to moan
and squirm underneath him.
“This isn’t—“ His back arched when Sirius wrapped his mouth around Remus’ cock
and swallowed him down to the root. “Holy—Merlin.” Remus goaned.
Sirius wrapped his hand around his cock and pumped while he bobbed his head up
and down his boyfriend’s cock. His tongue traced the slit and he lapped up the
precome. He popped off his cock which fell against Remus’ body. “Suck me.” He
said.
Remus scrambled and wrapped his arms around Sirius’ waist and wrapped his mouth
around Sirius’ large cock. Sirius’ head tilted back and he dug his fingers into
Remus’ hair and the brown haired boy bobbed up and down. His hot wet mouth slid
further down until he felt the head of his cock press against the back of
Remus’ throat.
Remus slowly slid his mouth off and caught his breath, “Fuck my mouth.” Remus
looked up at Sirius. “Now.” He commanded.
Sirius lined the head of cock at Remus’ mouth and slowly thrust in. When he was
all the way inside, he pulled out slightly and then thrust back in. He could
feel Remus swallowing him down. He moaned as he began to thrust steadily into
the brunette’s mouth. “Wait—I’m gonna—“
Remus mumbled something around his cock, which Sirius interpreted as ‘go
ahead’. Sirius thrust faster, he grabbed the back of Remus’ head and held it
there as he came. His head thrown backwards and moans escaping from his lips.
His limp cock slid out of Remus’ mouth.
He kissed his boyfriend and sat on Remus’ lap, “Alright. Time for Potions, I
guess.”
“You think I’m done?” Remus purred causing Sirius’ cock to harden. “I’m going
to keep you satisfied so you can work and not pester me.” Remus’ voice was
matter of fact. “Lay down.”
Sirius laid down on his back, Remus opened the nightstand and rolled the condom
onto Sirius’ cock and rubbed the lube. “Muggles, gotta love ‘em.” Sirius said
watching Remus rub the lube on himself. Remus liked to tease him by sliding up
and down on his fingers until finally replacing the fingers with Sirius’ cock.
Sirius watched as Remus slid three fingers inside himself and slowly worked his
way up and up, his neck exposed as he moaned Sirius’ name. “That’s not fair,
Remus.”
Remus smiled and positioned himself over Sirius’ cock, he held the thick cock
up as he slowly slid down causing the duo to moan. Remus put his hands on
Sirius’ chest and he lifted himself up and then sank back down. Sirius grabbed
Remus’ hands and thrust his hips up into his boyfriend. “You’re going to finish
that essay tonight, I’ll go with you to the library if that makes you feel
better.” Remus said lifting Sirius fully out of him and then slidding back
down, grunting softly as he began to bounce up and down on his boyfriend’s
cock.
“Ngh—fine. But we’re going down to the Great Hall first.” Sirus moaned.
“Deal.” Remus swiveled his hips.
Sirius suddenly lifted Remus up, and laid him down on his back and lifted his
hips and slid into him. “I’m gonna fuck you so hard.” He growled kissed Remus’
neck. “You always come through on that promise.” Remus said.
Sirius began to thrust savagely into Remus who dug his nails into Sirius’ back
and the black haired boy rocked his hips forwards and backwards. Remus grunted
with each thrust, the sound of skin slapping against skin added to their moans.
“Fuck—Moony.”
“I keep forgetting how huge you are.” Remus groaned when Sirius pulled out of
him.
“And don’t you forget it.” He slid into Remus again and began to thrust wildly
into him again. Underneath them the bed began to rock as Sirius’ thrust began
to become more erratic, he grabbed Remus’ hips and dug his nails as he came
hard. He pulled out of Remus and panted as he tied to condom off. He buried his
face in Remus’ ass and rimmed him until he felt Remus come with a cry above
him.
Siruis licked the white that had painted Remus chest and dipped his tongue into
his boyfriend’s waiting mouth. “I love you, you know that.” Sirius said.
“You say that everytime.” Remus rolled his eyes.
“Yeah, but I mean it everything.” Sirius’ voice was gentle as he gently kissed
Remus.
“Sirius Black, you old softie.”
“Shut up.”
“I love you too.” Remus pressed a kiss to Sirius’ lips, “Now. Time for
Potions.”
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