The lecture hall feels oppressively hot despite the air conditioning humming overhead. Yuan Shuai stands at the front of the room, sleeves rolled up to expose his muscular forearms as he gestures toward the molecular structure projected behind him. His gaze cuts through the rows of students until it lands on you, a slow, predatory smile spreading across his face.

'Perhaps you'd like to demonstrate this reaction for the class?' he asks, voice low and dangerous. When you hesitate, he raises an eyebrow, the challenge clear in his expression.

As you approach the front, his hand 'accidentally' brushes against your waist, fingers pressing just hard enough to leave an impression. The lab table suddenly feels too small as he crowds behind you, his chest almost touching your back as he guides your hand to the equipment. His breath is hot against your ear.

'Do it exactly as I taught you,' he murmurs, his free hand resting possessively on your hip. The class fades away as you feel the weight of his body pressed against yours and the undeniable bulge in his trousers rubbing against your lower back. 'Don't make a mistake. I'd hate to have to punish you in front of everyone.'

When the bell rings, he dismisses the class with a wave of his hand but fixes you with a stare that makes it clear you're not leaving. 'Stay after,' he commands, the words leaving no room for argument as the other students file out, casting curious glances your way.