Ryuko was conflicted. She'd made her peace with Mako being a futa, and even decided to overlook the things she did with her mother. But now...curiosity had her. She started noticing little things she hadn't before, like how Mako shifted in class, subtly rubbing her member through her clothes when no one was looking, or how often she went to the bathroom. Before, Ryuko had just written it off as Mako being weird, but now realized that Mako needed to frequent trips to play with herself.
It didn't help that, with the house being so small and the family being so okay whit each other and their bodies, Ryuko ended up catching more than a few glimpses of Mako's rod. She'd been shocked by its size from the first time she'd seen it, and would never understand how Mako was able to hide it so perfectly.
And now that she knew what to listen for, she could always tell when Mako and her mother were at it, not to mention the fact that Ryuko still woke up to find them still going at it.
She couldn't stop thinking about it. It was just so...there. She found herself staring at Mako's waist without meaning to, then wondering why she'd been doing it and looking back up. It got to the point that even Senketsu weighed in on the subject.
"I'm noticing spikes in bodily chemicals. The content of these chemicals and the path they're taking as they circulate indicate lust." He said in his usual flat voice. Ryuko blushed, glad that she was the only one who could hear him. "And what's that supposed to mean?" Ryuko questioned quietly.
"Simply put, and to use the most common language used by humans, it means you're horny." Senketsu said. Ryuko's gut instinct was to get pissed, but she knew both from the dry, almost bored tone in which he said it, and the fact that Senketsu seemed pretty much incapable if mocking and teasing, that he was merely stating facts. That didn't stop her from cursing at him, earning her a few confused looks from Mako and her family.
Ryuko politely excused herself and went to bed.
"I suggest you alleviate your lust by any means necessary," Senketsu advice from where he was hung on the door, "If you are not focused, an enemy could end up getting the drop on you."
"So, what? You want me to just start playing with myself with Mako right next to me?" Ryuko questioned in annoyance. "Personally, I don't experience such desires and don't very much care how you sate them. All I know is you reek of human lust, and the girl is dead asleep. If I hadn't seen her wake from it last time, I'd swear she was in a coma. Nothing you do will wake her." Senketsu stated.
Ryuko bit her lip, maybe...maybe Senketsu was right. He usual did know when something was wrong with her body, and if this was gonna mess with her fighting, then she needed to take care of it. She thought about going to the bathroom first and doing it there, but she was afraid that the movement would wake the others, and getting herself off would be impossible if she was afraid the pervs were watching.
So, after a little more internal debate, Ryuko conceded and moved her hand down into her pajama bottoms. She checked to make sure Senketsu wasn't watching, but he must've been telling the truth about not caring because he was back to sleep.
Ryuko looked over at Mako, seeing her asleep and showing no sighs of waking any time soon. Ryuko slowly removed her bottoms and moved her hand into her underwear. Gritting her teeth to make sure she didn't any noise, Ryuko pushed her hand between her legs, rubbing her pussy with her fingers.
She started slowly, but Ryuko rarely did anything gently for long, and was soon worked up and finger fucking herself with four fingers. Keeping silent was killing her, but she forced herself not to make any noise. She looked over, making sure Mako was still asleep, then in a moment of something like clarity realized that she was touching herself while she watched Mako sleep.
This realization would've been enough to make Ryuko stop, if her eyes didn't instinctively drop down, letting her see the tent that Mako's rod, erect from whatever dream she was having, was making under the blanket.
Ryuko couldn't pull her eyes off of it, as though hypnotized by the sheer size of Mako's member. Her fingers kept going, pumping hard into her pussy as she gawked. Ryuko let out a soft moan, unable to hold it in as she went. Mako didn't stir, and Ryuko was grateful.
Ryuko could feel herself getting close, but now a new desire took her. Hoping Senketsu was right about Mako staying asleep, Ryuko moved her free hand over, gripping Mako's blanket and pulling it off of her.
"F-fuck!" Ryuko yelped, her climax hitting only seconds after she saw Mako's cock, her first clear view of it. It felt amazing, Senketsu was right, she really had needed it. Unfortunately, there was something she'd forgotten to account for.
Senketsu had said nothing would wake Mako, but he also hadn't anticipated Ryuko touching Mako in any way. The feeling of the blanket rushing against her rod when Ryuko pulled it off made Mako stir, and Ryuko's yelp of pleasure when she came finished the job and woke her up.
Mako blinked, looking at Ryuko, hand stuffed in her now soaked panties, hand gripping the blanket that had just been pulled on of her, blissful expression on her face, and smiled ear to ear. Ryuko realized what was happening to late when Mako tackled her.
"Mom wakes me up with sexy surprises all the time, but I never thought you would to!" Mako said excitedly, kissing along Ryuko's neck as her member rubbed between her legs. "You must've been really excited to, just look at you!" Mako said with a grin, yanking Ryuko's underwear off.
"H-hey it ain't like that!" Ryuko said nervously, feeling her face burn as she felt Mako's rob brash against her exposed slit. Ryuko moaned softly, unable to help it. Mako seemed to take this as the 'all clear' sign, as she immediately kissed Ryuko before she could close her mouth, and thrust her cock into her hard.
Ryuko's cry of pleasure was muffled by the kiss that Mako was taking control of. Mako moved her hips fast, working her cock deeper and deeper into Ryuko's pussy. Ryuko tried to struggle, but her legs wouldn't obey her and her arms weren't strong enough to move Mako, either do to Mako being hyped up on lust or just being naturally stronger than Ryuko when she wasn't wearing Senketsu.
For the sake of her own dignity and sanity, Ryuko decided that it must be the former and continued trying to break free of Mako's grip. "You feel sooooo amazing Ryuko~!" Mako moaned, making Ryuko blush harder. Ryuko tried to respond with 'get the hell off me' or 'don't say shit like that', but all that actually came out was a loud moan; one likely heard throughout the house.
Ryuko grit her teeth to prevent another moan she could feel coming, as, even if she wouldn't quite admit it, Mako's cock felt great inside her. Seeing Ryuko try to hold it in made Mako giggle, "Don't try to hold it in silly, I know you love being really loud all the time, so just let it out like you really want to!" Mako timed her words so she rammed her cock into Ryuko to the hilt as she finished the last word, making Ryuko cry out in pleasure as she came.
"Doesn't that feel way better?" Mako asked. "Y-yes.." Ryuko said so quietly Mako almost didn't catch it. She couldn't help it, as much as she hated to admit it, she was loving this as much as Mako was, maybe more.
Slowly, Ryuko began to accept it. She was horny, Mako was horny, and they just happened to be in the same room. That's all this was, she told herself as her legs locked around Mako's waist, letting her thrust deeper into her. Mako sped up her movements in response, moaning loudly as she got closer. Ryuko shivered, getting an odd pleasure from knowing she was causing Mako to feel so good.
Mako hilted herself in Ryuko, grunting as she came. Ryuko gasped at the feeling of Mako's hot cum filling her pussy then spilling out onto the floor. Mako pulled out, some of her cum getting on Ryuko's legs and stomach.
The two panted, Ryuko contemplating her new position. She'd heard the term friends with benefits before, but never had anything like it until now. She supposed there wouldn't be any real problem with it, especially with it being Mako; who held next to no taboos about anything.