The next day of training

When the two Kryptonians met at the Justice League’s training rooms again, Clark was wearing a pair of boxing gloves, and offered another to Kara. She had to bite her lip to stop from giggling at the pretty pink color of her pair. Though she did like pink.

For the next fifteen minutes Kara toyed with Clark as if he was a little boy. Without doing any serious harm or knocking him out she dodged and jabbed until there was no doubt who was the better boxer. She got adept at drawing him in, then flicking him off balance with a carelessly outstretched push of her arm. She knocked him down several times and graciously stepped away to let him back up. Sometimes she turned her back on him completely to walk back to her “corner”, swaying her hips as she did.

Clark was panting and red in the face when Kara put him down one last time with a slightly harder jab to the solar plexus. She stood back and stretched her arms out, like she had just had a slight warm up.

“I mean, I think I’ve learned a lot about boxing, wouldn’t you say, Clark?” she said, with a cute little smile on her pretty face. “Maybe, maybe we could try something else?”

Clark succeeded in getting up to a kneeling position and nodded as he tried to regain his breath. Though he would never have said so out loud, he knew that Supergirl’s boxing skills already outclassed his. “We could try some wrestling? Would that work for you?” he said, trying to show confidence that this was something he could actually outmatch his teenage cousin at.

Kara herself was pretty curious to see if Clark would be as bad at wrestling as he was at boxing. Part of her felt excited at either being manhandled by Superman or by finding another way of dominating him. So she happily agreed to let her big, strong mentor teach her something about wrestling, “Just like you taught me how to box so well.”

Kara had to admit that Superman’s wrestling skills were slightly better than his ability to box. He showed her a few holds and she genuinely couldn’t break free once he had them locked in. Someone at some point seemed to have taught him something, whereas while boxing he was heavily reliant on his superpowers to help him absorb blows. Kara also had to admit that she wasn’t actually stronger than Clark, though she suspected that might change if she could knock him out again.

Clark made one of the biggest mistakes of his life when he decided that he’d let Kara put him in a hold. Maybe it was only a mistake in hindsight – certainly it wouldn’t have been much of training session if he had just demonstrated holds on her. Still, if he’d been more honest he’d have admitted that he had no idea how to get out of the wrestling holds he knew how to apply.

The hold in question was a rear naked **** combined with bodyscissors. Clark himself had been slightly unsure about the name and how to apply it with maximum efficiency. If he’d been thinking clearly, he might have remembered that Kara’s friend Barbara, known to the world as Batgirl, had used it on him very effectively in the past.

Weeks later, when Superman was little more than a **** to not one but two dominant teenage girls, he would ask himself why he hadn’t just tapped. Even an admission that Kara was a naturally better fighter than he was, and that he was the one who really needed training, would have been a better outcome for him. But being humiliated by Kara’s fists had made him **** not to lose another contest to the beautiful young blonde.

Clark desperately tried to loosen the girl’s grip around his throat, then gasped as her strong thighs crushed his middle with amazing ****. He tried to maneuver so that he could gain more leverage, but Kara controlled him with embarrassing ease, rolling with him so that she was constantly in control.

“Kuh, Kuh,” he babbled as his hands dropped down to his tormenter’s smooth thighs. Kara kept the hold locked on as he scrabbled desperately against her legs. Then she felt him slump in her grip. The Man of Steel, put to sleep by a girl a third of his size, for the second time in as many days.

This time, Kara didn’t feel any guilt or even pity for him. She knew he’d be fine physically and she was more than a little cross with him for patronizing her for so long when really, she should have been the one training him!

She poured water over his face to wake him up and by unspoken agreement they began a little wrestling match. Kara was exultant to find that her theory about knock outs making Clark weaker was correct. She could handle him pretty easily. She began to enjoy herself.

Though she wasn’t too knowledgeable about wrestling herself, she managed to trap Clark in a grapevine. His mighty arms were pinned above his head and she stared into his eyes as she used her own legs to wrench his apart, making him scream in pain.

As she lay on top of her defeated cousin, Kara was suddenly aware of something that shocked and excited her in equal measure. Clark, Superman, the Man of Steel was hard as a rock! Either the proximity of a beautiful young woman or the humiliation she was inflicting on him was giving him an erection that almost buried itself in her stomach.

If Kara had been a cartoon character, an angel and a devil might have appeared on her shoulders at that point. The angel, telling her to let Clark up and just be happy that she was such an effective fighter. The devil, telling her that she should make her dreams come through.

The devil won out, as easily as Kara herself had won her fights with her new toy. She lowered her mouth greedily on Clark’s and shoved her tongue down his throat, greedily taking possession of him. She pushed down with her head to stop him twisting away and maintained her iron grip on his wrists.

She lifted up slightly to see Clark’s frightened, confused eyes. “K-kara. What are you doing? This is-isn’t right…” She smirked at him and bit her lip. He was so cute! “I’m not going to tell anyone,” she purred. “It’ll just be our little secret. Besides,” she lowered herself to whisper in his ear “Your cock seems to like it a lot.”

She rubbed her nose against his, giving it a little nip. Then she french-kissed him again, relishing his struggles and his muffled protests. With a mighty effort, Superman managed to lift his arms from off the mat, only to have them slammed back down again as Supergirl broke her kiss.

Kara realized that Clark wasn’t quite weak enough for her liking yet. She was sure she was now stronger than he was, but one more knock out should make him helpless in her arms. And in her current position there was really only one way to do it.

Supergirl wriggled up his body slightly. Then without warning, she dropped down, mashing Clark’s face against her perky young tits. She clamped her arms around his head to maintain her grip, and reapplied her hold on his legs with her own. Clark struggled desperately, at one point even trying to grab Supergirl’s blonde hair to try and get her off him. But he had no strength left, and his arms dropped once more as the dominant teenager sent him to dreamland.