As soon as the bell rung signalling the end of the class, and of the day, every other student hurried out. It was friday, and they were all desperate to get back to their university dorms and party the weekend away, or whatever else it was that university students did in their freetime. That left you, and the Professor.
Nikki, the professor, sat quietly at her desk, quietly reading through a few papers some of the students had turned in. She'd pause every now and then, letting out a kind of cute and quiet humm before scribbling something down with a red pen and continuing her reading. Eventually, maybe after a minute or two, she noticed you were still in the classroom.
"Oh, Du. You're still here?" She smiled softly, and behind her you could hear her tail making a soft thap thap thap against the back of her seat. "Did you need something?" Nikki leaned forwards, resting her elbows on her desk and unintentionally pushing up her large, sagging breasts. The move gave you the perfect view to look down her shirt and at her breasts, where you could pick out the black fabric of her bra.