ᴘʀɪᴍᴇ [ᴄʟᴏsᴇᴅ: ᴏɪᴋᴀᴡᴀ]
Iwaizumi Hajime has been holed up in the library for approximately five days, three hours, twenty minutes, and forty-five seconds but who's counting?
He really needs to pass his next math exam.
Really.
(Forget the fact that he did not, in fact, fail his last exam and only did slightly worse than the average.)
Five days may seem like going a tad bit overboard, but Iwaizumi walked into the library a prepared man, with enough supplies to last him at least a week pouring over tear-stained calculus textbooks because, dear God, he was not going to just barely pass this class. However, one thing that he did not account for was the amount of mental strain a week-long stint in the library would bring about and this consequently lead to many nap breaks and some rather unfortunate attempts to play volleyball by himself.
When he finds he can no longer stand it, any of it, and starts writing The Second Fundamental Theorem of Calculus can go FUCK itself in the margins of his notebook, he cuts his losses and steps back into the outside world to find—
Chaos.
No, seriously, absolute chaos. You check out for a few days and come back to find the entire school embroiled in some kind of juvenile paintball war and see how you feel.
Iwaizumi's first action is to grab the first screaming person wielding a paintball gun and force the reason behind this madness out of them. He hears something about the Law class and passing and last team standing before they wrest themselves out of his grasp and land three shots on the person around the corner, letting lose some sort of battle cry that Iwaizumi has no intention of hearing ever again.
His second action is to see what's become of Oikawa in this mess and with every passing moment he grows increasingly suspicious of Oikawa's absence in the halls as well as irritated at having to dodge flying paint every three seconds when he's not even in Law, goddammit.
After grumbling under his breath for twenty minutes, Iwaizumi runs into Oikawa entirely by accident when he turns a corner to take a break from the second item on his list. "Runs into," in this case, is entirely accurate and correct as Iwaizumi only noticed his childhood friend lying on the ground, after unintentionally (this time) hitting Oikawa with his shoe.
He considers asking Oikawa if he's still alive, but given that he's still breathing and making what Iwaizumi supposes Oikawa thinks are pitiful noises, Iwaizumi figures that it's a moot point. Instead, he crouches down next to Oikawa and jabs him in the forehead, hard. "Dumbass," he says, jabbing Oikawa again.
"You're not even in Law. What the hell are you doing??"
Looks at the amount of paint covering Oikawa's body and decides that a change in tense is needed. "What the hell were you doing?"