Aqua tensed, clutching her shoulder as she ran her lips down the side of his cock, her soft breath touching him in light puffs as she brushed its surface with her lips. From top to bottom, brushing him just barely with the tips of her lips as she went up and down, never making full contact. He let out a groan tinged with ecstasy and frustration as she touched him briefly with the tip of her tongue, teasing him just enough to elicit a response, but not enough to completely satisfy.
She always started this way. She always made him wait as she took her time savoring his taste, taking her time with small samplings here and there, before rewarding him for his patience as she steadily pushed her approach, her lips getting ever closer, ever wider. She simply enjoyed watching him squirm as she oh so slowly amped up her attack. But it was only a matter of time before she would completely relent.
Ruby wrapped her fingers around his shaft one by one, taking her time as they closed around him one after the other. She stroked him lightly as she touched her lips to his balls, sampling them with the tip of her tongue. He placed his hand on her other shoulder, holding her firmly in place as she closed her eyes, rubbing her nose affectionately against his shaft.
Maybe she liked the foreplay more than the actual sex. Sometimes, she'd play with him for a little bit before deciding that she'd had enough, leaving Aqua with a terrible case of blue balls in the process. But maybe it was better to leave him wanting more every now and again.
But Ruby had no intention of leaving him out to dry today. It seemed that today, she was ready and willing to take everything he had to offer.
She held his cock in hand, pointing it at her face as she used its tip to trace her lips in a circle, moving it ever closer to the center of her lips with each and every turn. His hands tightened on her shoulders as she teased him by occasionally opening her lips for but a moment, allowing the tip to briefly slip inside, but for no more than a few moments at a time.
It was time. She had played with him long enough, and she thought that maybe he deserved it today. Pulling a loose strand of hair behind her ear, she placed the tip of his penis squarely between her lips, closing her eyes as she slid herself gently forward.
Aqua let out a deep, shuddering sigh as his sister swallowed him inch by inch, taking her time as she advanced. It was a hot day, and he tasted somewhat salty, but still she relished in the warm, pulsating feeling of her brother's essence as it filled her up. She felt his heartbeat on her tongue, and she let out a low moan without really meaning to. Soon, she'd reached the limit of how far she could go, and she started to pull herself back. Aqua's hand drifted from her shoulder to her breast, taking her up in his palm as he caressed her chest in a firm circular motion.
Ruby had pulled herself backwards, allowing his cock to fall limply away as she pulled her lips off of it. She pressed her nose up to it again, rubbing her face against him like a cat.
Aqua was ready. He took his hand off of her chest and placed them under her arms, lifting her off her knees and onto her feet. It was a signal that she knew well, and her breathing shuddered as her brother's lips met her own, entwining his tongue with hers as he took hold of her thigh, lifting her leg into the air and pulling her close.
She squealed into his mouth as he pressed the tip of his cock into her core, giving her just enough to make her squirm, but not enough to completely satisfy.
Now it was his turn to tease, and she hated being teased. She made her frustration known by biting down slightly on his tongue, and he seemed to take this as an invitation, pressing his bottom teeth into her lip, rewarded with a whine as he finally gave her what he had been holding back.
She ran her fingers down his back, tracing his spine. She pulled him closer and closer, pulling him further into her body as her breath quickened. He pushed her against the wall, reaching the very limits of her depths as he pressed himself as far as he could go. She was panting now, her breath bouncing off his neck as he held her in place. She shook her head back and forth, overwhelmed. Ruby pressed her nose into his shoulder, whimpering slightly as he pulled back for another thrust.
They were both so stupid, doing this sort of thing. What if she got pregnant, just like her mother? The birth control pills Ruby had managed to get from Mem-cho were helpful, but they weren't a guarantee, either.
But who cares about that, really?
Ruby playfully pushed him backwards by the chest. It was time to go somewhere a bit more comfortable. She took hold of his penis, pulling him along behind her as she began to walk away. He complained, but of course he would follow. Allowing her to pull him along as if he were a dog. She was in control now.
She pulled her brother up the stairs and into the bedroom. Placing her hands on his chest, she pushed him roughly onto the bed, which rocked up and down with the force of his fall. She climbed onto him, holding his cock between her finger and thumb as she lined it up with her body.
She pushed herself onto him, allowing gravity to do most of the work as she filled herself up with each and every inch. She placed her hands flat on his chest, holding him down as she rocked her pelvis around in a circle.
Holding him down by the chest with all of her weight, Ruby had her way with him. She loved the look on his face as she moved her hips up and down. She loved how he held his eyes tightly shut, a grimace on his face as he bit down on his lower lip.
She wanted it inside of her this time. She wanted to feel him in the deepest reaches of her body. She wanted to feel the closeness, the warmth. She let herself fall onto her brother, her chest pressed into his own as he pulled her into an embrace. Her cries soon turned into wails as her body flushed with sensation as they reached the breaking point together.
His body lurched and he dug his fingernails into her back. A groan leaving his lips as he reached the end of what he could handle.
There was a lot of it, and Ruby shook and squirmed in a mixture of joy and discomfort. Perhaps she had teased him a little too much, because he'd saved up a lot more than she was used to.
The pair lay together in an embrace, breathing heavily as the spasms of Aqua's body slowed down before gradually coming to a close. It the first time he had finished in a few days, having been subjected to Ruby's teasing for far too long. But it had all been worth it for this.
Aqua's cock gradually softened and fell away, and Ruby placed both hands on her brother's cheeks, sandwiching him between them as she pulled him into a kiss. They fell into each other once more as she wrapped her tongue in his, holding him tightly as her heartbeat started to slow.
After a moment, Ruby allowed herself to slide off of Aqua as she settled in beside him, pulling his body close as he pulled the covers over the both of them. His arm wrapped around her, Aqua began to gingerly stroke the top of her head, and a tingling feeling washed up and down her body as she closed her eyes to sleep.
Needless to say, she was glad she had done more than tease him that day.