As his Master instructed, Max waited in the locker room after practice, until the dojo was closed. When he felt a slight tingle across his balls, that was his Master's signal that he should come back out onto the floor, naked.
Max did so, not hesitating as he strode out onto the matt, where his Master waited. She, however, was still dressed in her gi. What Max did not expect was a couple other women to be present, watching from the stands. Two of them were fellow students, while the other was another instructor.
Max swallowed, feeling a touch of nervousness. "Master," he said. "I was to understand this would be a private lesson."
"The lesson, Maxwell, is to learn to focus despite distraction, particularly of this nature," she said.
"But..."
"If you came in knowing exactly what to expect and prepared to tune it out, it would not be an adequate distraction. Understand, I don't wish to embarrass you, but facing your embarrassment is going to be part of this. It is, after all, a key factor of your arousal."
Max took a breath and nodded, calming himself. He shifted into a combat stance. His Master shifted into a stance as well, and Max noticed that her gi was rather loosely fitting. Max forced himself to ignore her cleavage.
They sparred for a few moments, Max concentrating on trying to land a hit on her, and succeeding in three light taps. It was clear, however, that his Master was taking it easy. However, as they kept fighting, Max inevitably found himself admiring his Master's form, both her movement as well as her physical figure. As always, he found himself becoming aroused. Before he knew it, his penis began to grow erect. There was a whistle from one of the girls who were watching.
Max gasped as her palm flew out and struck him flat on the chest, knocking him on his ass. He managed to roll into the fall and summersault back onto his feet, but he paused before attacking again, trying to will down his erection. "A moment, please, Master," he said.
"A real opponent will not give you a moment," she said, and his blinked in surprise as she slid off her gi, revealing her fully naked body. He had never seen her naked before, just flashes and glimpses of her curves. She was more beautiful than he imagined. His cock swelled to full mast. He was so taken, he almost failed to block her next strike, thrusting forward with a quick, snake-like snap of her body.
Max backpedaled, trying to get some distance, but she was all over him, keeping pace with his retreat, and blocking any attempt to dodge to the side. Max new he would hit the wall any second. His only option was a frontal offensive.
Max feinted another back step, only to instead lunge forward, striking her in the chest to force her back. She managed to roll with the attack, caught him by the wrist, and send him flipping over on to his back. Max hit the matt, but still managed to roll back to his feet. Gritting his teeth and forcing himself to focus, he went for a stronger defensive as she attacked, blocking and parrying her strikes. He pressed the offensive again, and managed to land several more strikes, though Max knew she was not going all out.
For a moment, he even managed to forget her nudity, and ignore the cravings of his loins. But then, the tingling along his balls started. She was using her magic to distract him now. This is where the real test began.
This went on for several minutes, and the sensations slowly got stronger. Soon, the tingles began to travel in a loop from his balls to his penis tip, stroking him slowly. Max, whose stamina had always been tremendous, was not yet winded by the physical effort of the sparring, but found his breath getting heavier as the sensations teased his cock.
The sensations got stronger, and soon, it was all Max could do just to block his Master's strikes. He began to stumble as the sensations caused little jolts of pleasure all through his groins, making his thighs and knees tremble. A couple catcalls from the girls in the stands didn't help matters.
Max tried one last punch that his Master easily side stepped. This time, rather than flip him over with a physical toss, she simply applied more sensations to his cock. Max gasped as he felt something wet and hot close around his cock, and his body instinctively jerked. This threw him off so badly, he tumbled to the floor, and this time, didn't roll out of it.
His Master was lenient enough to let him get to his feet. He tried to stand tall, but he could not help but fidget and twitch as the sensations of a phantom mouth worked over his cock. All four of the women in the room could clearly sense the tightness in his balls.
"Perhaps you should have relieved yourself before practice," said his Master. "Two weeks without an orgasm, at your young age, no wonder you're breaking down so fast."
"Y-you said it yourself, a real opponent wouldn't give you a ch-chance," said Max. He was straining to control himself now, cock twitching in excitement, pre-cum already seeping from the tip.
His Master frowned. "I think we've done enough for the day," she said, and turned to pick up her gi.
"No! I can do this!" said Max through grit teeth, taking another stance.
"You cannot," she said.
Max let out a frustrated growl and charged at her. "Yes, I can!"