Hogwarts AU: Oikawa offers Iwaizumi a chocolate laced with love potion as a prank. It’s supposed to make the person who ingested it completely infatuated with the person who offered it.

But Iwaizumi acts completely normal bc he is already in love with Oikawa.

Oikawa thinks his potion failed and offers a chocolate to Makki. Within 2 minutes, Makki is all over Oikawa, cuddling up next to him, trying to hold his hand, Mattsun eventually pulls Makki away.

Realization dawns as Oikawa looks at Iwa who is scowling at him.

Oh.

‘Oh, he’s going to avada me when he finds out’ Oikawa thinks as he runs out the portrait hole to find Makki and Mattsun and bribe them into silence.

They didn’t make it far but the potion is already starting to wear off.

“What the bloody hell was in that chocolate?” Makki says

“Okay, before you get mad, you have to promise you won’t say anything Iwa-chan,” Oikawa says, holding his hands up in a placating manner.

“Why aren’t we allowed to say anything to Iwaizumi?” Mattsun asks, always one to make life more difficult for Oikawa.

“Because I gave him the first chocolate and nothing happened.”

Mattsun frowns, “but something should have happened.”

“Exactly! But nothing happened which means he /likes/ me. So you have to come up with a lie about why you were all over me in the common room, Makki.”

“I’m not lying for you. You drugged me!” Makki states, in a very scary tone.

“Iwaizumi can’t find out that I know he likes me and that I found out because I gave him a love potion.”

“You did what?” A new voice asks coming around the corner.

Oh bloody hell.

Oikawa turns to see his worst nightmare walking down the corridor.

“Iwa-chan, hi! Where are you going?” He asks.

“Back to my common room. We were studying and then Makki went nuts and you all left. Now tell me what you did.”

There’s no room for escape. No flowery words or +

smiles will get him out of this. Time to come clean.

“The chocolates had a love potion in them.”

That might have been a bit too blunt.

“But I didn’t react-“ Iwa’s face goes red as he figures it out too.

Oikawa is immediately contrite, “Iwa-Chan, I never would have +

done if I’d have known how you felt.”

That was apparently the wrong thing to say. Iwa’s wand is out in an instant, pointed right under Oikawa’s chin.

“Stay the fuck away from me, Oikawa.”

And he storms down the corridor, heading to the Hufflepuff common room.

“Merlin, Huffles can be really scary,” Makki mutters as he and Mattsun start walking back to the Slytherin common room.

Mattsun calls out, “You’ll figure out a way to fix this. You always do.”

“It’s not going to be easy,” Oikawa shoots back.

Mattsun laughs, “love never is.”

Part 2: Hufflepuffs unite with literally everyone to destroy Oikawa Tooru.

Oikawa is having a very bad day.

It seems as if the entire school is trying to murder him today. He been tripped, bat boogied, snarled at and there is a pencil shouting, “Loser” floating behind him.

Makki and Mattsun laugh at his expense and Iwa-chan... Iwa-chan won’t even look at him.

He wants to explain, to apologize, to confess he feels the same same.

But the Hufflepuffs won’t let him get close.

A first year actually spits on Oikawa’s shoes during breakfast +

when he tries to approach the table.

Kenma shouts at him saying that he’s already done enough and should go drown himself in the Black Lake.

That gets the attention of the entire school because Kenma just doesn’t do that.

This is going to be much harder than expected.

The Hufflepuffs can only do so much when its time for class because Iwa is the only Puff in 7th Year Advanced Potions.

So they enlist Ravenclaw’s help and send Kuroo to protect Iwaizumi.

Oikawa finds Kuroo in the chair next to Iwa.

“That’s my chair, get up,” Oikawa says.

Kuroo grins, “I don’t know what you did but there’s no way I am letting you sit here.”

Oikawa looks around Kuroo to Iwa who is staring at his hands, “Iwa-chan, please!”

“Don’t call me that,” Iwa snaps, shooting a murderous look at Oikawa.

“Move along,” Kuroo smirks.

And so it goes.

Daichi protects Iwa in Transfiguration.

Bokuto protects Iwa in Herbology.

But the biggest betrayal comes in the form of Suga, a member of his own house, protecting Iwa in Defense Against the Dark Arts.

“Suga, et tu?”

“Don’t be a whiner. +

You brought this on yourself,” Suga says turning his back on Oikawa.

The utter betrayal of Slytherin is stunning. He knew everyone at school liked Iwa but this was something else.

Final Arc:
Oikawa decides that public apologies are out of the question. So he uses his Slytherin scheming to concoct a plan.

He has Hinata ask Iwaizumi for help with potions and has him schedule iña study session for 7pm in the library. While Hinata may be a Slytherin,

no student can resist helping him.

Hinata reports back that Iwaizumi has agreed.

Somehow, Oikawa forgot that Iwa-chan knew him and was probably going to guess the scheme.

Oikawa is peeking out from behind a bookshelf when Iwaizumi walks in flanked by Nishinoya & Asahi.

Bloody hell. Abandoning his plan, he writes a note and enchants it to drop into Iwa’s bag.

Oikawa has already snuck out of the library when Iwa finds the note which says:

Hajime,

Meet me in our place. I want to explain.
I’ll be there all night.

Tooru

Oikawa is sitting in the stands under the Hufflepuff banner when Iwa-chan shows up.

“Hi,” Oikawa says, nervously sitting up straighter.

“You look like shit,” is the response he gets.

Oikawa sighs, “it’s been a rough 24 hours. Can you tell me why I’m public enemy #1?”

Iwa plops down in a seat about 2 down from him.

“Asahi caught me wiping away tears as I came in the portrait hole and called a prefect meeting. You should have heard some of the things they were plotting.”

Oikawa’s heart wretches at the thought of having made Iwa-chan cry.

“It was a dumb joke but I wanted to know what it would feel like to have you love me.”

His whisper carries because he sees Iwa-chan jerk forward.

“And you thought embarrassing me in front of Slytherin was the way to do that? You’re so stupid, Tooru,” Iwa says, moving seats.

“Yes, Iwa-chan, we’ve determined that I’m an idiot,” Oikawa snaps.

Iwa shakes his head, “No dummykawa, all you had to do was ask and I would have shown you exactly how I feel.”

Oikawa can’t believe this is happening. Merlin, did Hajime feel the same way he did?

Iwa slowly grins, “The potion already told you that I like you, Tooru.”

Oikawa blurts out, “Willyougoonsdatewithme?”

Iwa laughs, “Try that again in a language I understand.”

Oikawa takes a deep breath, “Will you go on a date with me? Next Hogsmeade weekend?”

“No.”

Oikawa’s brain short circuits. Did Iwa-chan just say no?

“Well, rather, I’m not saying yes yet.”

“Why not?” Oikawa demands.

The smile Iwa sends him is absolutely terrifying, “you were going to publicly humiliate me. I think I need a demonstration of the depth of your feelings for me.”

“Like the love potion? It won’t work on me,” Oikawa states.

Iwa-chan leans in to kiss him on the cheek & then he’s gone. Walking away & calling out, “Use your big brain, Tooru. I look forward to seeing what you come up with.”

This is blackmail. Who knew Puffs were so devious?

The next morning at breakfast, Oikawa waits until it’s the most crowded before he enacts the plan. Makki starts the music and Oikawa climbs on top of the Slytherin table.

And starts to sing, his voice magically amplified by his wand, “You’re just too good to be true, can’t take

my eyes off of you. You’d be like heaven to touch, I want to hold you so much. At long last love has arrived and I thank god I’m alive. You’re just to good to be true, can’t take my eyes off you.”

He points at Iwa-chan (who is laughing at him) and then he dances.

He keeps singing the words, jumping tables and making his way closer to Hajime.

He slides across the floor, ending up right in front of Hajime, belting out the last lines of the song, “Let me love you baby, let me love youuuuuu

Hajime’s cheeks are tinged pink with delight as he laughs at Tooru’s antics.

“Come here, loser,” he says, pulling Tooru up off the floor and crashing their lips together in a fierce kiss that isn’t totally appropriate for the Great Hall but no one seems to care.

Oikawa pulls back, breathless and grinning, “Want to get out of here?”

“Merlin, yes,” Iwa says, grabbing his bag and Tooru’s hand.

The students cheer as they leave, Makki continuing to play the song until they are well out of sight.

“My answer is yes, by the way,” Iwa says.

“What answer?” Oikawa asks, stupidly.

“Yes to going to Hogsmeade with you.”

“Well I should hope so. Did you see what I just did for you in there?”

“Shut up and kiss me, Shittykawa,” Iwa grunts.

“With pleasure.”

[mischief managed]

Here’s the inspiration for the dancing scene: