The first time Sakusa experiences cute aggression, he is…disconcerted, to put it mildly. He has no idea what the feeling is or where it came from. It happens when he’s brushing Atsumu’s hair off his forehead.
He just finished getting him cleaned up after pounding him into the mattress, and both of them are exhausted and ready for sleep. Atsumu leans into his touch, nuzzling against his hand and giving him a blissed-out smile. His heart patters, and then the strangest thing happens.
The image of a sleepy, sated Atsumu travels from his eyes to his brain, where the information is processed. This is adorable, his brain tells him. Bite it.
He’s so surprised by the sudden impulse that he jerks his hand away. Atsumu is already mostly asleep, so he doesn’t notice, but Sakusa is convinced he can hear his heart pounding. What the fuck was that? Where did it come from?
He shakes it off, tucking the covers around Atsumu and pressing himself to his back. It was probably just an intrusive thought. It won’t happen again.
But it does happen again. And again. And again.
But it does happen again. And again. And again.
It happens at the strangest times. It happens when Atsumu is sitting on the couch, laughing at something on his phone. It happens when he’s humming to himself while he cooks.
It happens a lot early in the morning or late at night when Atsumu is sleepy and fighting to keep his eyes open. There doesn’t seem to be any rhyme or reason to when this impulse will strike.
He always resists, letting it pass him by without acting on it, but the day does come when his self-restraint gives out. Atsumu is fresh out of the shower, wearing nothing but underwear and one of Sakusa’s high school volleyball shirts.
He comes to bed, settling himself in Sakusa’s lap and pressing a kiss to the underside of his jaw. He faces forward, resting his back against Sakusa’s front, taking the other man’s arms and wrapping them around his waist.
Once he’s comfortable, he lets out a contented hum, eyes falling shut.
Sakusa strikes.
He presses his mouth against Atsumu’s neck, biting down with the barest hint of pressure.
Sakusa strikes.
He presses his mouth against Atsumu’s neck, biting down with the barest hint of pressure.
Atsumu gasps, and Sakusa jerks away, eyes falling on the shallow indent on his neck. He feels the blood rushing to his cheeks, an apology on the tip of his tongue when Atsumu leans up and returns the bite with one of his own on the underside of his jaw.
Atsumu pulls back with a grin, lightly butting his forehead against Sakusa’s jaw.
“Been wantin’ to do that forever.”
“Wait…You…You wanted to bite me?”
“Course I did. Yer adorable.”
“Been wantin’ to do that forever.”
“Wait…You…You wanted to bite me?”
“Course I did. Yer adorable.”
Sakusa tightens his arms around Atsumu’s waist, indescribably relieved that he isn’t just some psychopath with the constant urge to bite his partner. His heart swells when, after that night, Atsumu gives him love bites regularly, usually twice or more a day.
• • •
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