While Kyouka was questioning her own morals, Ren was busy planning many things. He made sure Kyouka stayed by his side in case something went wrong—after all, he was playing a dangerous game, and he knew he needed a powerful woman who didn't love him romantically to protect him if necessary.
What Ren didn't expect, however, was for Kyouka—the supposed elder sister, not related to him by blood—to start feeling something special for him. Ren wasn't just doing all these phsyical contact for nothing, especially when Kyouka's soft ass brushed against his already half-erect cock, making him want to have some fun.
She was about to say something when she caught sight of his nude body from the corner of her eyes right behind her. Her gave couldn't help wandering from his chest to his half-erect penis and she closed her mouth, swallowing her saliva loudly.
Ren also took the opportunity to study her body and was in for a surprise. Her short silver hair made a nice contrast with her amber eyes while her bright facial features were proof that she was a very kind yet serious person.
She was overall in great shape, with medium-sized modest breasts decorated by large nipples and a barely protruding stomach. Her tight and unsued vagina was completely shaved, her big clitoris naturally sticking out outside of its hood and her pussy hole was open, as if unable to stay closed by itself.
His sister, finishing her own inspection of his body, now noticed his gaze and asked him, as she turned his head.
"Are you not shy to be nude in front of me, Ren?"
"No, why? You're my sister. Didn't you see me naked countless times already?"
"That was when you were small. You're all grown up, now."
"It's all the same, I don't mind."
"Really..."
She looked at his penis, hardening right before her eyes, and laughed. She felt like an asshole for taking advantage of her innocent brother, but deep inside she knew she didn't want anyone else to ruin his innocence. If anyone should do it, it should be me, she thought to herself.
"I guess you are at that age now. Is it seeing my body that is making you like this? What do you like about my body, Ren?"
Ren acted a bit shy, answering.
"W-well, Sorry Kyouka, you look so beautiful, it's doing it on its own."
"Don't worry about it, this is something natural. You really think my body is beautiful?"
"Of course, you look amazing, Kyouka."
"Ahah, thank you, even if you don't mean it."
"It's true, I am not lying."
"Alright, alright, I can believe you when your thing is reacting like that. You also look great, Ren. With a body like this and a tool like yours, you will make all the girls go crazy for sure. But let you elder sister teach you few things."
"You think? What kind of things are you going to teach me, Kyouka"
"Hm, there are lot I want to it's really complicated. It's better if we take things slow. Is there anything you want to know?"
"I am curious about female body. Yours is the first I saw, Kyouka,"Upon hearing those words, Kyouka felt like she was in the cloud nine.
'So I am going to be his first memory' She thought to herself."
She grinned and stopped talking for a moment. Ren took the opportunity to get another look at her exposed body.
"S-say Kyouka, can I ask for something?"
"What is it?"
"Is it alright if I look from closer up?"
"Ahahah, of course you can Ren. You can look as much as you want."
She opened her arms and legs wide, allowing him to have a great look at her naked figure as she changed the positon. Her erotic yet young build was very mesmerizing and he couldn't take his eyes off her. He slowly approached her and checked her boobs, followed by her belly, and finally glared at her vagina, which was underwater.
"Is it ok if I touch it a little?"
His sister smiled at him, as if she had expected his request.
"Sure, Ren, go ahead."
He took his hands out of the water and ran them on her belly, lightly caressing her stomach. He then moved up toward her bust and cupped her modest breasts, raising them, appreciating their moderate weight. Without releasing them, he touched her large nipples with his thumbs, running them in a circle around her protrusions.
After a few seconds of that, he took her right nipple in between his thumbs and index fingers and pulled lightly on them. He saw his sister's face, which had been purposefully very stoic through the whole thing until now, twitch a little, and the girl closed her eyes for a second.
"HUH? WHY AM I FEELING IT ON MY CHEST? IS THIS NORMAL?" Kyouka started question her own self because in this world, men are the gender that enjoyed getting their nipples played with.
Happy to have gotten a reaction out of her, he continued pulling on them delicately in all directions, his sister's face twitching from time to time. Once he had done that for some time, she spoke to him.
"You look like you really like those, Ren. You don't need to be so delicate, I am very sturdy and pulling harder on those won't do any damage. You can do it stronger if you want."
"Really? I don't want to hurt you, Kyouka."
"Don't worry, you won't. Go ahead."
Getting her permission, he pulled harder on the nipples, her boobs deforming in different shapes. He was still careful not to hurt her in any way, only doing it a little bit more, sometimes twisting them a bit, but nothing excessive.
His actions had a clear effect on her, though, and she let out a long sigh, before she began to breath harder. He went on with this for a while longer and when she started to pant with a hint of lust in her eyes, he queried her again.
"Kyouka, can I try touching you down there, too?"
She looked at him and started answering.
"Well..."
She looked conflicted, tempted to act on her lust while also being aware that she shouldn't let this go too far or things might get out of control. Seeing her like this, Ren didn't push her to take a decision, simply continuing what he was doing. After a minute more of him playing with her nipples, she began to moan a bit, and finally gave up.
"...Alright."
"Thank you, Kyouka!"
Ren happily kissed her cheek, showing his appreciation, while she smiled awkwardly. He sent his hands down toward her crotch in the water and she warned him.
"You should be a little careful down there. It's ok to pull my labia but the other ones should only be touched or flicked at most, you know the small organ on the top."
Ren nodded and put his hands into the water, before first running his right-hand index over the full length of her pussy, starting from the crack at the bottom, all the way to the soft her clitoris at the top.
His sister didn't react much to it and he continued a few times, feeling the texture of her pussy, before following her instructions and pulling a little on her pussy lips and gently messing with it. He was fascinated to see how her lips opened up, allowing him to see better inside. Or at least, as well as the water permitted to.
"Kyouka, I can't see well because of the water. Can you sit on the rim of the bathtub, please?"
She didn't say anything and complied in silence, standing up and sitting down where he indicated. She closed her legs for a second but soon opened them again, her exposed groin now at the level of his head.
Her sweet female smell spread out in the bathroom, enticing and arousing him. He went back to use her labia to open her pussy, inspecting her bare young inner cunt. Soon enough, he noticed that the water on her crotch didn't dry, replaced by her fluids, which started running out of her opened vagina hole like water itself.
"What a sight!" Ren muttered to himself, silently thanking the goddess for reincarnating him into this world for the first time. But that didn't mean he was going to forgive her—he knew that hidden behind all these beautiful pussies and fragrant nipples was his possible death, whether by stabbing or poison.