#and im surprised bc it looks like iwaoi is the most popular pairing in hq rn with the most fics

[diyeoracha]

IwaOi Master Fic Rec List (50+ Fics)

Hello! In celebration accumulating over 190+ bookmarks on my AO3 account featuring IwaOi and Iwaizumi coming back into the manga (and for his (almost) birthday), I decided to create a masterlist of all of my favorite fanfictions in order to keep myself organized as well as contributing to more traffic on those works! I decided to split the works up by my own self-imposed genres, such as angst, coming-of-age (or the childhood-friends-to-lovers trope that we all love which depicts how their relationship changes as they grow up and will mostly be canon-compliant), and alternate universe. With the revival of Iwaizumi in the manga, alternate universes will be broken down into adulting AU where he and Oikawa’s diverge differs from in canon and actual, legit AU where there’s basically no volleyball.

I’ll include the title, link, word count, fic summary, and my own commentary (mostly for my own personal entertainment). While the AO3 fandom has been going strong since 2014, I personally have only been reading IwaOi fics for about 3 months, so I will most likely be recommending some cult-favorites, especially since I’ve been reading my fics by sorting through the tag with the most kudos.

My absolute favorites (or the ones where I personally push onto my IRL haikyuu friends) will be denoted with ♡ in increments of 1-3 with 3 ♡ being an absolute must-read. Fics marked with a * indicate that Iwaizumi or Oikawa or both are professional athletes because that’s honestly my Favorite Trope. This is incomplete as I got distracted while re-reading a lot of these and have only gone through half of my bookmarks, but feel free to check my own page here for the rest of them! This took me about 9 days to compile (aka this was in my drafts for about 9 days) but I do hope you guys enjoy reading these and leave comments and kudos!

Adulting AU 

*♡♡Thirty Years and Change (the Games of the XXXIII Olympiad)

Word count: 19k

Summary: It’s July 10th, 2024, and Oikawa Tooru is an Olympian. His smiling face airs on an NHK promo every 45 seconds. He’s captain of the national men’s volleyball team, reigning star of the professional leagues, and he hasn't spoken to Iwaizumi Hajime in two years.

Thoughts: THIS IS IT. THIS FIC IS GOD TIER. They’ve been separated but now are falling back into old habits and there’s a confession on the line? Akaashi is in here and he’s pretty funny. I reread this all the time.

*♡♡♡the courtship ritual of the hercules beetle

Word count: 66k

Summary: Tooru is pretty sure he could manage the mating habits of a mosquito. It’s the mating habits of people he can’t seem to get right.

Thoughts: Absolutely the best IwaOi fic I’ve ever read. I’ve reread this about 4x and I always pay attention to a new sentence or detail that leaves me breathless. The characterization is pretty spot on, and I have to admit that this fic made me appreciate IwaOi a little more. I’ve cried countless times too. A cult-favorite but it doesn’t have nearly as many hits as it deserves.

♡days fall away

Word count: 17k

Summary: Except now he’s back home, so close to his old haunts and to Oikawa himself, and it's—weird.

Thoughts: They’ve separated for a bit but now they’re back in the same city and learning to be around each other again. Cue teasing from the biological and Seijoh family

it's been so long (nobody knows me the way you do)

Word count: 8k

Summary: Tooru hums, only half-listening. Somewhere along the way, Hajime’s palm has settled itself over the curve of Tooru’s cheek, thumb tracing over the line of his jaw.

Thoughts: They’re living together post-college feat. snapshots from their lives before getting together and their Seijoh team! It’s really soft but it manages a humorous tone as well.

Time

Word count: 5k

Summary: When they're twenty-three, their story only begins.

Thoughts: A piecewise fic told from Oikawa’s point of view. The tone is almost chatty but it really fits the pacing of the work as you get snippets and sentences of their relationship throughout the years

♡Almost a Stranger

Word count: 16k

Summary: Iwa-chan's leaving Japan. Tooru's not sure he can forgive him, but he's not going to admit his long-held feelings, either. A trip to Miyajima complicates everything.

Thoughts: They go on vacation right before Iwaizumi leaves Oikawa for a year. Oikawa ponders their relationship.

where fireflies never die

Word count: 4k

Summary: >>Oikawa: Hey Iwa-chan >>Oikawa: Did I ruin it?

Thoughts: Oikawa is a mangaka and basically writes his best selling series based off of him and Iwaizumi. This was pretty angsty ngl with a lot of introspection and second-guessing.

In the Business of Love

Word count: 22k

Summary: Meet Oikawa Tooru: He's a best-selling shoujo manga artist, a hardcore romantic and you won't believe where he's getting his lovey dovey fodder from...Enter Iwaizumi Hajime: He's Oikawa's best friend, a realist who also happens to be a wedding magazine writer despite not believing in romance...

Thoughts: Mangaka Oikawa but this is basically a rom-com lmao

Alternate Universe

Even Heroes (have the right to dream) 

Word count: 20k 

Summary: Oikawa Tooru, ace reporter of the superhero beat of Asahi Shimbun, hates superheroes. Or maybe he just hasn’t met the knight one yet. 

Thoughts: Superhero-hiding-his-identity-Iwaizumi and begrudging Oikawa? Sign me up. This fic spent a little more time on worldbuilding than eventual romance, but it is still absolutely unique and entertaining

The secret omega

Word count: 17k

Summary: Iwaizumi’s annoying as fuck best friend. Who absolutely, definitely, no matter what, cannot find out that Iwaizumi is an omega.

Thoughts: A/B/O dynamics where Iwa is the omega and Oikawa is the alpha. 90% plot building which is pretty nice.

Conquering the Great King

Word count: 105k

Summary: Oikawa's lips twitched into a smirk and he brought them hovering just over Iwaizumi's, "One time thing, Two time thing, what's it matter as long as it's not a Relationship thing?"

Thoughts: Malicious and flirtatious Oikawa meet immovable object Iwaizumi. They’re businessmen trying to navigate friends-with-benefits and love all at the same time. A+ sex scenes tbh. 

♡Infinite Risks

Word count: 8k

Summary: “It’s my fate,” Oikawa responds slowly. He’s crying.“It’s too lonely,” Iwaizumi’s heart sounded broken. “And I’m not there with you. Not really.”

Thoughts: Edge of Tomorrow AU!!!!! Please watch Edge of Tomorrow first because it’s truly a brilliant movie that I wholly enjoyed and this fic reflects that. This also made me really sad so Beware

*♡Something Like Us

Word count: 28k

Summary: Friends since childhood, Oikawa and Iwaizumi now live together, both playing for the National Team. It's no secret that athletes who are bonded perform better. So if the two of them happen to bond...It'd be for the good of the team, right?

Thoughts: ABO dynamics (and somewhat canon-compliant) as they’re roommates, on the national team, and try to navigate being “fake” mated while harboring feelings

And All the Prince’s Men

Word count: 65k

Summary: “Father only loves that which he owns, and I am the one thing that can never truly be his.”

Thoughts: Royal bastard son Oikawa and his servant Iwaizumi. An enthralling read and universe. The romance takes a secondary seat here as it focuses more on plot and world-building. 

♡long nights, no peace

Word count: 18k

Summary: It's the steady knowledge that Iwaizumi Hajime will always be someone that he can rely on, that no matter what the world throws at the two of them, they share in a piece of each other's soul.

Thoughts: Pacific Rim! AU. Otherwise known as my favorite types of AUs because they’re basically soulmates (platonic or not,, but they’re not platonic here)

♡(sing with me) A Song of Conquest and Fate

Word count: 26k

Summary: When Seijou receives a missive from Aobajousai to discuss a potential peace, its emperor Oikawa Tooru could not have foreseen the series of events that would follow.

Thoughts: Warring states/historical fantasy AU. The world building is amazing and this author has great control over her language use

Cotton Breathing

Word count: 13k

Summary: 

Thoughts: Long-distance and summer only but childhood friends Iwaoi!!! A dreamy summer piece and reading it almost makes me feel like I’m in a Studio Ghibli movie because of the mood it puts me in

Similar Creatures

Word count: 53k

Summary: "What's your name?" "Whatever you want it to be."(Or, Oikawa gets directions from an attractive stranger on a street corner.)

Thoughts: Iwaizumi is an escort and Oikawa needs a fancy date

Space

Word count: 44k

Summary: Tries not to think of his rooftop garden, or the apartment he used to inhabit, or Hajime’s broken expression on the night they whispered their goodbyes before Tooru’s launch, attempting to push it all to the back of his mind behind visions of this alien world terraformed

Thoughts: Oikawa’s in outerspace. They’re separated. This left me feeling pretty empty ngl.

♡here comes your man 

Word count: 8k

Summary: Iwa-chan, it reads, Have a good day today! Good luck! <3 <3 <3Suga chokes. It’s hard to imagine anyone calling the scowling and fierce Doctor Iwaizumi “Iwa-chan.” But marriage probably comes with all sorts of liberties.

Thoughts: Doctor AU where Iwaizumi and Oikawa’s relationship is pondered by Suga

In the Telling

Word count: 6k

Summary: Muggleborn Iwaizumi could not be less impressed with pureblood Oikawa Tooru.

Thoughts: Harry Potter AU where they’re in the same year and aren’t really friends but are also friends

♡♡The Loyalty of A Traitor

Word count: 76k

Summary: Iwaizumi Hajime was an undercover officer with a single objective: Infiltrate the Seijoh Syndicate of the Yakuza and tear them down from the inside out. His primary target was the boss, Oikawa Tooru. The job itself was simple enough, until Iwaizumi got in too deep and absconded not only from the mission, but from the city itself.

Thoughts: Oh fuck this was Good. Yakuza boss Oikawa???? Disgraced Iwaizumi??? Do they fall in love (again)?

and suddenly, we were traitors

Word count: 17k

Summary: "sorry, it's just... you’ve been amazingly kind to me these past few days. ...but i'm still not sure who you are.”

Thoughts: The amnesia fic this fandom needed

Trial by Fire

Word count: 78k

Summary: (lawyer!AU - in which Iwaizumi loves his objections, Oikawa is beautiful, and they have more chemistry than two opposing attorneys probably should.)

Thoughts: Hot

dear diary, i met a boy

Word count: 15k

Summary: Iwaizumi's first impression of his upstairs neighbor involves getting woken up at two in the morning to the sound of Oikawa singing along to trashy pop music. He'd thought it would get better, but it all just goes downhill from there.

Thoughts: Model Oikawa and salaryman Iwaizumi meet and try to make it work

on shipwreck shore

Word count: 8k

Summary: “I’m going to murder you in cold blood and feed you to the basilisks,” Iwaizumi says conversationally.“You can’t do that, I’m your boss,” Oikawa sings, positively sparkling. “Also we’re partners, which means,” he points at Iwaizumi and leans in, “you’re stuck with me.”

Thoughts: Detectives but they’re actually funny

♡Lockdown

Word count: 72k

Summary: Within the first few months of his stay, Oikawa gets caught up in a war between cellblocks, becomes a prime target, and must decide just how far he's willing to go to protect Iwaizumi Hajime.

Thoughts: Orange is the New Black AU!!! Im a sl*t for tatted Iwaizumi

an allegory of all the things we could’ve been

Word count: 16k

Summary: “I don’t know anything about some red string,” Iwaizumi murmurs into the cracks of Oikawa’s skin, “or even about lifetimes or fate. But no matter where you are, I’ll find you. Gods or otherwise.”

Thoughts: Reincarnation AU throughout the timelines. A good soft read that leaves you sort of empty

Angst

Timeless (We Have 30 Days)

Word count: 12k

Summary: Or AU where you're branded 50 days before you die. But Oikawa doesn't tell anyone so now there's only 30 days left.

Thoughts: Ahhhhhhhhh tears

the weight of water

Word count: 6k

Summary: “Again,” he says, the smallest tremor in his voice, and Oikawa blinks at him a moment before smiling, soft and sweet. “Iwa-chan,” he replies, and Iwaizumi closes his eyes. “Again.” “Iwa-chan.”

Thoughts: Death fic 

open when

Word count: 1k

Summary: Iwaizumi knew it was coming, but it still hurt. It still hurt when he opens one letter and drowns it in the tears he cannot keep at bay.

Thoughts: It takes only 1.6k words to make me cry

Canon Compliant/Coming-Of-Age

♡♡i sing the body electric

Word count: 8k

Summary: It was never part of the plan, falling in love with his best friend, but then again, most things in Iwaizumi’s life that involve Oikawa rarely unfold the way he thinks they will.

Thoughts: A beautifully introspective piece told from Iwaizumi’s point of view. It’s wholly intimate and it toes along the lines of pining and soft angst. It’s told in snippets from their lives growing up together. 

♡we can do better than that

Word count: 16k

Summary: Oikawa and Iwaizumi go on a road trip during the summer after their high school graduation. It doesn't go as expected, but maybe that's not such a bad thing after all.

Thoughts: There’s a lot of character analysis and it takes a step away from the casual banter they’re always portrayed to have and focuses on the intricacies of their relationship. The tone is almost a little more melancholy. (also they have to share a bed! trope)

♡when it starts to rain, they go inside

Word count: 33k

Summary: “Where?” starts Iwaizumi.“My parent’s old lakehouse, silly, didn’t you hear me the first time?”OR: Oikawa takes Iwaizumi to his lakehouse for two weeks, post-graduation.

Thoughts: Oh This Is It IwaOi stans. This fic really solidified my own headcanon for Oikawa (spoiler alert, OP isn’t too fond of Oikawa but she fleshes out his character and his idiosyncrasies so well that you can’t help but be drawn into all of his imperfection) and this fic respects Iwaizumi as well. It has absolutely great characterization and the fic ends on an ambiguous note. 

to be first, to be best

Word count: 26k

Summary: Hajime is apparently something of a masochist, and as he stares down at the tie-dyed AREA51 T-shirt in his hands, he thinks “I’m totally in love with this asshole, aren't I?”

Thoughts: College roommates trying to navigate having feelings for each other while also dating others and not realizing that they’re jealous? A cult favorite.

♡things that change, things that stay the same

Word count: 8k

Summary: Oikawa realizes he's in love with his best friend; it sucks for a while. (But only a while.)

Thoughts: Ahh a slow burn featuring daily moments between Oikawa and Iwaizumi, and Oikawa starts to notice the little things. This was a cute read because Oikawa just comes off as wonderfully earnest. My first Iwaoi fic! And a great one because it really set the standard to how I interpreted their relationship.

it’s better than words

Word count: 3k

Summary: [ or : oikawa makes iwaizumi participate in three bonding activities for new friends, and iwaizumi just wants to know why oikawa's being so weird about this]

Thoughts: Soft pining, fluff, banter, and whispered confessions. This fic really nailed the banter of high school students really well.

♡shiver

Word count: 16k

Summary: Oikawa was always the brave one. Hajime just followed two paces behind.

Thoughts: Oikawa falls first and but Iwaizumi realizes his feelings later on! So soft, so slow burn, so much pining. We get to see their relationship through Iwaizumi’s eyes and actually read him analyze his own feelings.

♡we shine like diamonds

Word count: 26k

Summary: "You know Abe-kun from class?" they snicker, hands cupped around their mouths like they're passing along a filthy secret. "I hear his older brother is... gay."

Thoughts: Character analysis, homophobia, and coming of age makes a good and angsty iwaoi fic

terrarium

Word count: 11k

Summary: At this point, is he really happy with just staying best friends forever? Will he be writing journals and collecting rocks forever (he will, he knows, but that is aside from the point)?

Thoughts: Oikawa has a terrarium and names all of the rocks he puts in (that Iwaizumi gave him) “Iwa-chan #_”

Chasing Paper Suns

Word count: 10k

Summary: Post-high school, Oikawa makes it to the national volleyball team but Iwaizumi doesn't. The next three years become an exercise in growing up without growing apart.

Thoughts: This was pretty sad tbh. Of what it means to grow up together and then suddenly having to adjust to living without each other’s presence.

with every second that you could give

Word count: 9k

Summary: The journey of Iwaizumi and Oikawa going for gold.

Thoughts: Of growing up together, making decisions for each other, and wanting to be together

Only the jellyfish know

Word count: 6k

Summary: Their third and final year at Aoba Jousai has come to an end, and the guys decide to go to the beach the day after graduation.That day, the ocean water is salty, the watermelon is sweet, and the people are sweeter.

Thoughts: Established relationship

Smut

strange.

Word count: 1k

Summary: "god, i fucking hate you."oikawa smiles, cause he knows it's not true. he knows iwaizumi loves him, knows iwaizumi adores him. but he plays along."i hate you too,"

Thoughts: It’s hot

Say My Name 

Word count: 2k

Summary: “Hey, have you ever tried saying my first name?” Iwaizumi blurts, and the thought jumps out of his subconscious only after he's posed the question.

Thoughts:

No Touching Allowed

Word count: 10k

Summary: “You’ve got one rule,” Iwaizumi winks at him.

Thoughts: ExoticDancer!Iwaizumi and stressed out/repressed businessman Oikawa also an AU.

Honorable Mentions

things wikipedia doesn’t tell you

pillow

Phone Home

Share my life, it’s yours to keep

in progress to you

no sleep in the city

The PDA jar

Kissmarked