https://open.spotify.com/track/3Z4BxvgOJ8KupcDIV3OV2f?si=60bb07d50c514237 - IN YOUR FANTASY by ATEEZ ;) (sorry this is longer than it is meant to be im so addicted to jeongsunging)

Jeongin is already biting back a grin before they even start—mostly because Jisung has insisted on wearing glasses, not his regular reading ones, but a thick rimmed pair of fake ones which have no lenses with a piece of tape wrapped around the bridge.

“Ahem,” Jisung says, sitting at the foot of the mattress. “Yang Jeongin-ssi, you’ve been a very inattentive student.”

Jeongin likes the way Jisung's dress shirt pulls across his chest. “Yes. Very inattentive.”

Jisung clears his throat authoritatively, again. “I’m afraid I’ll have to give you some…extra credit work.” He spreads his legs suggestively, and his fake glasses choose that moment to slide down to the very tip of his nose.

Jeongin snorts.

“No, this is sexy, seriously,” Jisung insists, adjusting his glasses and lifting the clipboard once more. “Stay in character. Ahem. Your behavior in class has been—” he flips the clipboard, flashing the blank page that must mean to represent Jeongin's grades. “—deeply concerning.”

Jeongin can't believe he pulled out his uniform for this. It's far too tight. He tries to readjust the pull around his shoulders but quickly gives up when it feels like the yellow fabric seams will split. He settles for loosening his tie with a sigh that threatens to lift into laughter again. “Hyung, do we really need this much lead up?”

“I’m improvising! Teachers improvise!”

“Oh my god.”

Jisung stands, tapping the tip of his pen against his bottom lip. He doesn't notice the dot of blue ink he leaves there by accident. “Mr. Yang, if you don’t straighten up, I’ll have to—” He pauses, searching for menace. “—confiscate your… your…” His eyes dart around the room. “Your pencil case.”

“That's the best you can do?”

“Losing your pencil case sucks!” Jisung protests. “You need that for school! I hated when I'd lose my stuff in school, I'd do anything to get my Hamtaro pencil case back.”

"Anything?" Jeongin asks with a raised brow. He stops his idle swaying on Jisung's desk chair to widen the gap between his legs. Jisung's glasses slip down his nose again as he stares at the shape of Jeongin's cock pressed up against the obnoxious yellow fabric.

Jeongin is kind of over this. He pulls his tie over his head, working the first few buttons of his shirt open as he palms his growing erection. Jisung squeaks as he blinks out of his stupor. "Hey, wait, I'm the teacher right now!"

Jeongin drags him down by the collar before Jisung can grab his ruler, already laughing into his pen stained mouth. “You're the worst teacher I’ve ever had.”

Jisung grins, breathless but triumphant. “And yet, you still want detention.”

“Yeah,” Jeongin murmurs against his lips, clumsy fingers trying to work the fastening of Jisung's stupid khakis “yeah I do.”