She'd moved away from his still-hard manhood and nuzzled in under it to suck on his balls. He nearly broke the pen he was holding, and grabbed tightly at her hair, gasping as quietly as he could and thrusting as gently as his raging arousal would let him.
He pulled at her hair, then rubbed his own cock as she continued to tease his balls with her tonger and teeth. His tip was pounding, it couldn't swell anymore and he was desperate to come, but the girl continued to tease and his mind would dwell on the sheer guilt and shame he felt from the whole situation. His back arched and Nozomu almost whimpered slightly, the chair moved but thankfully made no sound, Matoi pushed his legs further apart and wrapped her lips around his penis once again, sucking hard now, and moving faster, her Sensei was coming hard and fast into her mouth.