baby vampire iwaizumi who comes off as a mean and grumpy child to oikawa because the former always grimaces with his eyebrows scrunched but the truth is iwa only looks that way because he is teething!!! his fangs havent fully come out yet!!! and he is in pain most of the time!!!

he doesnt tell oikawa about the fact that he isnt human out of fear, but when he hears oikawa ramble about the supernatural with fascination, he decides that it wouldnt be so bad to tell the young human boy that iwaizumi craves blood sometimes...

oikawa takes it in stride of course. and then he scolds iwaizumi for not telling him sooner ("iwa-chan! why did you let me call you a meanie when your gums hurt! i feel so bad now!" "... what did you just call me?").

vampires and other entities actually lived freely among humans in this age, but there are still those who are wary of revealing their identities, so oikawa promises that he wont tell anybody else ("this will be our little secret iwa-chan!!!" "i already regret telling you.").

and so they became friends. he and iwaizumi end up attending the same school and oikawa grows accustomed to the things that remind him that iwaizumi is different; the fangs and the red irises and the inhumane strength eventually cease to surprise him, but his fascination stays.

but things take a turn when they both fell in love with volleyball. the sport was perfect for them especially for iwaizumi who was struggling to find an outlet for his pent up strength (oh how adolescence sucked). joining their middle school team, then, was inevitable for them.

iwaizumi finds that excessive physical activity in the presence of one oikawa tooru was actually dangerous for him—now more than ever. because being a teenage vampire meant he could no longer live off refrigerated animal blood. because growing up meant craving for something else.

iwaizumi needed human blood now.

and good heavens, oikawa simply smelled /so good/ after trainings.

he doesnt tell oikawa any of this of course. as far as oikawa knew, iwaizumi still lives off those blood bags in their fridge. and as far as oikawa knew, iwaizumi definitely did not want to sink his fangs into his neck.

it was hard, but iwaizumi managed to keep his cool—

—until their third year in high school when oikawa discovers that iwaizumi's mom has been ordering human blood bags from a nearby hospital for iwaizumi. for his idiot of a best friend who refused to tell him that he stopped drinking from animals years ago.

"when were you planning on telling me that you drink human blood now? cant even tell your best friend that? what happened to trust, iwa-chan?!"

"why would i tell you anyway? so that you can run off? so that you can be scared of me?"

"so that you could drink from me instead!"

iwaizumi feels the fight drain out of him as he blinks in shock.

"... what the fuck did you just say?"

oikawa turns away, cheeks reddening in embarrassment, and iwaizumi's senses suddenly zero in on the sound of oikawa's racing heartbeat.

"i said... you could drink from me instead." oikawa whispers so softly that a normal human wouldnt be able to hear it.

but iwaizumi wasnt a normal human. he wasnt human at all.

"do you even understand what youre telling me, oikawa?"

oikawa looks at him in the eye before he speaks. "yes, iwa-chan. i know that your lineage only chooses to bite people you consider partners and i also know that youre stubborn as hell. but if youll have me... if you want to... you can drink from me from now on."

it takes iwaizumi two strides before he is right in front of oikawa, and he immediately cradles his jaw with a gentleness that almost looks wrong paired with the red glint of his eyes.

"do you know just how long i've wanted to taste you?"

the gasp that oikawa lets out sends shivers down iwaizumi's spine, but he reels himself in. he has to keep himself in check before he's sure that oikawa knows the gravity of whatever he was proposing.

"this is your last chance to walk out that door, oikawa."

"i'm not leaving."

with that oikawa pulls the vampire into a kiss that is all teeth and tongue, and the groan that leaves iwaizumi's lips was downright filthy. oikawa wasnt faring any better though; if it werent for iwaizumi's grip on his hip, he would have already collapsed.

oikawa was slowly losing himself to the sensation of iwaizumi's demanding mouth against his, but his mind blanks out when he feels his lip being pricked. iwaizumi pulls away just in time to see the bead of blood resting on oikawa's lower lip before he leans in again to lick it.

oikawa could only whimper while iwaizumi began to playfully sucks his lower lip into his mouth, and then iwaizumi pulls away again to wipe the stain on oikawa's chin. for a brief moment all they could hear was their ragged breathing—

and then:

"i knew you would taste good."

the neck biting doesnt happen that night because iwaizumi knew he might not be able to stop himself and knows that drinking directly from the source would lead to... other things... so he settles with that little appetizer before he walks a dazed oikawa home.

they obviously become boyfriends because iwaizumi is a loyal and traditional vampire who refuses to let it be an arrangement based on convenience. and besides. oikawa made his feelings known already so... win-win!

what the fuck is this mess i really was supposed to only tweet about baby vampire iwa how did i let this spiral out of control