Work Text:
Gojo-sensei immediately passes out asleep on Yuuji after all the fights are over, and he nearly falls over under all of the sudden unexpected bulk of 190cm of man. No one can even help him because Infinity's up around them.
With a lot of good-natured ribbing from all the nearby sorcerers, Yuuji manages to drag the two of them to an actual bed to sleep. After all, Gojo-sensei deserves his rest given all that he's done for them, and clearly this means that he trusts Yuuji to take care of him, right?
And Yuuji feels just as tired. He nearly had five separate heart attacks watching Sensei face off against Sukuna, and all the adrenaline is gone now but Gojo-sensei's not. Gojo-sensei is still here, alive, and Yuuji's so relieved that it's easy for him to fall asleep too.
He wakes up later—groggy, disoriented, and hot. Overwhelmingly, unbearably hot for what's supposed to be late December weather. He feels way too hot, and stifled under a heavy weight such that he can't really move, and... good?
Yuuji jolts awake like a live wire when he realizes that he's hard, and that Gojo-sensei is on top of him, pinning him, rutting into him. He realizes that Gojo-sensei is hard, and big, and that Yuuji can tell because their cocks keep grinding together through their clothes—hot.
Sparks-down-his-spine hot. Stomach-clenching hot. Toes-starting-to-curl hot, because oh, fuck, Yuuji's already dangerously close.
"Sensei," he gasps. "What are you doing?" He tries to stifle his moans, but they come out anyway—caught in his throat as soft, helpless whimpers.
"Stop!" His hips jerk up against a particularly rough drag, and Yuuji's such a hypocrite. How can he expect Gojo-sensei to stop when Yuuji doesn't want to stop, when it feels so good that Yuuji's going to—?
"Sensei, stop. Please." Yuuji digs his fingers into Gojo-sensei's back and tries to hold on through his unrelenting rhythm. Sensei's breath comes out in short, steady pants above his ear, unperturbed by anything Yuuji's had to say.
"Please stop." Yuuji feels tears prick against his eyes, and he's gasping for breath, shaking with how good it feels. "I'm begging you. Please. If you don't stop, I'm going to come."
Gojo-sensei doesn't even act like he's heard, and Yuuji might actually cry—from the shame of being unable to help himself from meeting Gojo-sensei's thrusts, from a dirty newfound part of him that's actually enjoying being ignored and forced like this, from the sheer pleasure rocking him to his very core.
"Sensei. Gojo-sensei, please. Ngh…" Yuuji drags his nails down Gojo-sensei's back. His vision blurs. "Please. Fuck. Harder, please. Ah, I'm gonna come. Sensei. I'm gonna—"
It's torn mercilessly out of him, and Yuuji groans as he unloads a filthy wet mess into his underwear.
Gojo-sensei doesn't slow his pace, rolling his hips through Yuuji's orgasm, and he keeps on going before Yuuji can even catch his breath.
"Wait." Yuuji bites his lip as oversensitivity makes him wince. "Wait, Sensei, it's too much. Hang on."
But Gojo-sensei never hears him.