He caressed and flickered her whole vagina checking the effect on her sensitive flesh as well as her reactions to it. She shivered when he fingered her vaginal hole under her urethra and he could see her pee hole trembling a bit.
Once he touched her clitoris, she moaned quietly, and unconsciously pushed her hips in his direction, as if saying that she wanted more. Happy to comply, he used one hand to repeatedly flicker on it, sometimes going back to her vaginal hole, and back on the clitoris itself. Her moaning was growing louder, her waist sometimes jumping a little at the stimulation.
All the while, he had been interested in her opened pussy hole. He was wondering how much she could have been penetrated that her hole would never close again back to it's pure form. He kept his left hand to work on her clitoris and used his right hand's index finger to penetrate her hole.
He hadn't asked permission to do that but his adopted sister didn't say anything, on the contrary looking like she welcomed it. The most interesting thing happened when, aiming for the center of her hole, he was able to push his finger inside her without touching her flesh at all. This was one of the most erotic things he had ever experienced and his dick couldn't help but throb for some time.
He entered deeper and finally hit some of her walls, which twitched a little at the contact. He moved his finger around, feeling her warm and wet flesh around it, before taking it out of her. Then, in front of her surprised eyes, he put his wet finger inside his mouth, tasting her very deep and feminine flavor.
Seeing this was wild to her because all her life, she had considered Ren to be the most sweet boy she had met, after all, after Misa adopted him she really took a good care of him and seeing him licking her pussy juice form his finger was the last thing she expected to see.
"Why would you do that, Ren?"
"Sorry, Kyouka, I was curious about how it tasted. It's so delicious. Can I have more, please?"
Then, without waiting for her answer, he moved his head forward and kissed her pussy hole. Without taking his tongue out, he started to suck up her juices, enjoying her taste. Now inside her crotch, her smell engulfed him, deep and powerful, entrancing and erotic.
She was startled at his sudden action and instinctually tried to push his head away. But, before her hands could touch his head, she stopped herself, as if afraid that doing anything could hurt him in some way, whether physically or mentally.
She stayed like this for a long time, deep in thoughts. Eventually, she sighed, as if giving up, and put her hands delicately on his head, caressing his hair lovingly. There was now a different glint in her eyes, as if she had taken a decision, and she said.
"Ren, what you're doing is very pleasant for me too. Do you want to continue?" It was almost as if she had accepted that she had moved past the point of no return. She no longer saw Ren as her innocent adopted brother; instead, to her, he was beginning to look like a proper man.
He removed his head from her groin and nodded eagerly, smiling happily.
"Alright. You're making me feel so good that I am close to reaching my limits. Do you want to see how a woman orgasms?"
He nodded yet again.
"Okay. I will tell you what to do and you can just follow my instructions. Are you fine with using your mouth again?"
"Yes, you taste incredible, Kyouka."
"Thank you, Ren. Alright, first, put your mouth over my clitoris and suck on it strongly."
He followed her instructions and swallowed her large protruding clitoris. He felt the taste of her flesh as well as the sweet taste of her pussy juice, which gave a novel feeling which he isn't used to. He then sucked heartily on her sensitive place and she let out a moan, much louder now after her mood switched.
"That's good, just like that. You continue doing this. Now, use your fingers to enter my vagina."
Considering how horny women in this world, he directly took two fingers from his right hand out and pushed them inside her. Even with two fingers, he felt very little resistance as he went into her hole and she continued.
The reason for this was that women in this world were two or three times hornier than the women in Ren's original world. The breaking of their hymen gave them pleasure instead of pain, which showed just how intense their desires were. Ren knew that even the most well-behaved woman, like his adopted mother Misa, would release her juices at night—he could clearly hear her moaning in the dark.
"You can use more fingers."
He added a third one, which also slid in without an issue and she added.
"Still more."
Now he was surprised but decided to listen to her. He added his thumb inside her, feeling it scratch against her walls, making her shiver. He had almost put his whole hand inside her and he was mesmerized by this fact. Still, this woman wasn't even done instead it looked like she was on the peak of enjoyment.
Good, now push it as deep as you can." This wasn't just sex for Ren—it was a lesson in how to please women in this world. He knew this was only the beginning, and that practice now would be the best-case scenario for him, ensuring no woman could ever take him by surprise.
His cock pulsed again at her words. Wasn't she basically asking for fisting? Removing his mouth from her groin once again, he couldn't help questioning her.
"Are you sure, Kyouka? I don't want to hurt you."
"Don't worry, that won't happen. Push it as strong as you can, if possible try to touch my walls."
There was a very lewd look on her face and he could see great expectation in her eyes clouded by lust. Ren gulped, feeling like he was entering a new world. Taking a deep breath, he focused on his arm. He waited for a few seconds, his adopted sister breathing roughly in anticipation, and suddenly plunged it to her very depth, with great momentum.
At that moment, Ren realized just how little stamina he had and how weak his endurance was. It wouldn't be long before a woman broke his hips while riding him. This was a wake-up call, a reminder of just how horny and durable the women in this world truly were.