I rearrange the stack of papers, close my laptop, empty her sharpener, and zip her pencil case but to my relief, she doesn’t look up, though she’s still on the same problem. I grab her ruler and rub it against my palm waiting.

And waiting...

Dragging my chair back, I get to my feet and circle the table, standing directly behind her. From this angle, I can see straight down her blouse and to her heavy braless tits. Of course, I already knew she wasn’t wearing one the second she slid out of her navy blazer. Through the thin fabric of her shirt, her nipples were already at attention.

She wants my attention because despite her feigned obliviousness I can’t remember a single time Sin would be caught dead in public without a bra. She’d said her tits hung too low without it, but to me, they were absolutely perfect. The only person who’d expect them to be under her chin with no support is some loser who was only used to the inflatable tits in porn.

Another minute ticks by. Another three elastic snaps against her wrist.

But she’s still on the same problem.

“Oh!” she cries out, her ass jumping in the chair as I swat the ruler against her left pebbled nipple.

“The elastic obviously isn’t working. So, I’ll help you for now.”

She looks up at me with those huge brown eyes, confusion and something else swirling in their depths. “Rohan?”

I hit her right nipple and she jumps again, letting out a breathy moan.

“Focus and you won’t need the pain. Right?”

She eyes the ruler, the tip of her pink tongue darting out to wet her lips.

She likes it.

“Are you sure pain works?” I tease, arching a brow. “Because you’re just staring at me, staring at you. I don’t think you want to get away from the pain. I think you want even more of it.”

She swallows.

“Or maybe it isn’t intense enough for you to not crave it.”

I slide a hand to the hem of her shirt and fold it up, over her heart so the bottom of her breasts and her nipples are exposed. She’s frozen, but the moment I swat her tit again and watch goosebumps pebble her dark nipples she comes to life, moaning so hard, her thighs squeeze together, her stomach contracting.

“Pick up the pencil, Roisin, unless youwantanother hit? Is that it? Are you enjoying the pain too much to focus? Should I stop?”

“N-no.”

“But if it’s not working...”

She picks up the pencil, stares at her acronyms for a few seconds, then begins to write.

Ten minutes go by and I can see she’s slowing down again, stumbling over a problem with a few extra powers, brackets and fractions.

You know the rules, Sinny. Just follow them.

She starts and stops. Erases, and looks back to the acronyms.

Eventually, she’s making progress again but the moment I rustle some papers, her eyes snap to my fingers and the moment they do, I pinch her nipple.Hard.

“Mmm,” another repressed moan tries to escape her lips, and I nearly cave the moment she turns her head into my side as if on instinct.

I want to sink my fingers through her hair that’s extra fluffy today and pull her just a fraction over, straight to where my cock’s already rock hard.

But I don’t. The timer only has thirty minutes left and she still has three sheets, back and front to get through.

“Ignore the distractions. Focus on the formulas.”

“The formulas,” she repeats almost dreamily.