*kicks down the door* here's the terushima/atsumu smut content that no one asked for and yet everyone seems deeply intrigued by
BEHOLD! THE MIYA ATSUMU HUMILIATION SHOW
Terushima lowers himself down until his mouth hovers inches from Atsumu's. "And you loved every second of it, didn't you?" The denial dies on Atsumu's lips. Because whilst he did hate it, whilst it drove him insane and made him want to waltz right up to Terushima and punch him in that damn smarmy face of his, there’s a part of him that did maybe… sorta… kinda… like it too. He tells himself that it’s because he likes attention and yeah, okay, he might even go so far as to admit that he kinda gets off on it. He likes being appreciated and desired, and all of the enjoyable things that come with it. But it has absolutely nothing to do with it being attention from Terushima; cocky, arrogant, blonde-haired, brown-eyed Terushima. Atsumu considers that part to be irrelevant.
Gird your loins for 17k of banter, absurdity and smut of the comedic variety as dumb blonde Atsumu meets his match in dumb blonde Terushima at a college house party, and gets himself absolutely clowned in the process. Spoiler: he loves it