Wang Yue said helplessly, "Yesterday it was done through the clothes, after all."

"Today it can also be done through the clothes," Wang Xin'er said, growing bolder at her brother's helpless look. She then turned over and mounted Wang Yue, using the wonderful source between her legs to press down on his firm member.

Without waiting for Wang Yue to object, she imitated the bumpy motion from yesterday in the car, her little bottom moving up and down. Wang Yue quickly reached out to grasp his sister's delicate waist, preventing her from moving around, and said, "Don't bump around like that; you might get hurt."

"No way, it feels really comfortable this way," Wang Xin'er said, pressing down harder with her little bottom, making her brother's hard member press firmly against her.

Seeing that his sister was determined, Wang Yue, in order to guide her correctly, had no choice but to say, "This really won't do. Forget it, let me show you what true comfort is."

"What exactly is true comfort?" Wang Xin'er asked curiously.

Wang Yue looked at her and said, "First, you need to take off your pants."

After all, Wang Xin'er was already a fifteen-year-old girl. No matter how innocent she was, asking her to take off her pants in front of a boy made her feel very embarrassed.

However, the idea of true comfort mentioned by her brother piqued her interest, so after a brief hesitation, she took off her training pants.

Once her pants were off, Wang Xin'er was left in just a white cotton underwear with cute cartoon patterns on it.

This little girl-style outfit made Wang Yue feel a bit guilty in his heart.

But thinking that he was just teaching his sister some basic physiological knowledge, and not doing anything else to her, he quickly felt relieved.

He reached out and pulled off her cartoon underwear, then gently parted her slender, fair, and delicate legs. Wang Yue's breath instantly caught.

He hadn't expected that his sister also had a "steamed bun" shape. Although not as plump and full as his aunt's, she already had the beginnings of such a shape, looking like a little steamed bun, with a deep, narrow slit in the middle. Her entire genital area was white and tender, just like her aunt's, with not a single hair on it.

Seeing her brother staring at her genital area after he took off his underwear, Wang Xin'er immediately felt very shy and said in a coquettish voice, "Brother—"

Only then did Wang Yue come back to his senses and sincerely praised her, "Xin'er, this part of you looks really beautiful."

"Weren't you saying you wanted to make me comfortable?" Wang Xin'er didn't care whether her genital area looked beautiful or not; all she wanted was to experience that feeling that made her feel as if she was flying.

Wang Yue brought his right middle finger to his tongue, licked it, and wetted it with saliva, then pressed it into the narrow slit on his sister's "steamed bun" and gently squeezed it in, then began to move it around.

Wang Xin'er was about to say that she had already tried it with her finger and that it wasn't anything special.

But immediately, she realized that the feeling when her brother's finger moved was completely different from when she used her finger.

That familiar yet strange sensation made her little bottom tremble slightly, and her muscles instinctively tightened. A thin stream of sticky liquid immediately seeped out from the depths of the slit.

"Brother, I'm having an orgasm," Wang Xin'er said, although she already knew that this wasn't urination.

"It's okay; it's a natural reaction," Wang Yue said, continuing to move his finger in her slit. "This is called vaginal fluid, or lubricant. It comes out when a girl gets excited."

"What happens to you guys when you get excited?" Wang Xin'er asked curiously.

Wang Yue lifted the thin blanket covering him and pointed to the large "tent" formed by her underwear, "Just like that, when a guy gets excited, his penis becomes hard."

"Penis?" Wang Xin'er remembered the meager physiology lessons her aunt had taught her and asked curiously, "Isn't it called penis?"

"Penis is the scientific name; it can be called whatever you want," Wang Yue explained. "There are many ways to refer to a man's penis, like penis, dick, meat stick, genitalia, etc.; they all refer to the penis."

Wang Xin'er nodded, not quite understanding, and then asked, "Do girls have many different names for this part of their body as well?"

"Yes, its scientific name is vulva, and it can also be called little hole, pussy, etc." Wang Yue continued to move his finger, drawing out more of her vaginal fluid, and asked with a smile, "Xin'er, does it feel comfortable for you when I do this to you?"

"Comfortable!" Wang Xin'er said happily, then continued in the spirit of a curious little girl, "Brother, auntie said that when guys and girls have sex, babies are born. What exactly is sex?"

"Sex is when a guy inserts his penis into a girl's vulva," Wang Yue said. "A guy's penis becomes hard, and a girl's vulva releases sticky vaginal fluid; both of these things make it easier to insert."

"Insert?" Wang Xin'er's beautiful eyes widened in shock.

"Yes, after insertion, the guy moves his penis back and forth in the girl's vulva; this is called intercourse, and it's the most comfortable thing in the world," Wang Yue said. "But Xin'er, you have to remember that you must never have intercourse with any guy casually; it can only be with someone you like."

"I like you, brother, but I definitely don't want to have intercourse with you!" Wang Xin'er's face turned pale. Although she had never actually seen her brother's penis, she could tell from measuring it with her hand how thick and long it was. If it were to insert into her body, it would probably tear her open and go straight into her stomach.

It would go all the way to the stomach. Just thinking about that scene made her feel terrified.

Wang Yue said with a wry smile, "We are brothers; of course, we can't have intercourse. I mean, not with other guys."

"I definitely don't want to play with other guys," Wang Xin'er said immediately, then added with a pleading look, "Brother, from now on, you have to play with me like this, but you must never have intercourse with me, okay?"

Although Wang Yue had never had such thoughts, hearing his sister say this, he couldn't help but ask, "Why?"

"Your penises are so big; if they were to insert into my vulva, they would probably kill me," Wang Xin'er said, looking scared.

"Silly sister, a girl's vulva is very adaptable; it can even give birth to a baby. My penis isn't as big as a baby's," Wang Yue said with a laugh. "But I promise you, I will never have intercourse with you."

Only then did Wang Xin'er feel relieved. She panted and said, "Brother, you made my vulva feel very comfortable, but it still doesn't feel as comfortable as yesterday. Why don't you use your penis to press on it again?"

"Don't worry, I have other tricks," Wang Yue said. He then buried his head between his sister's legs, pressed his thumbs against her two tender labia, and parted them apart, revealing a thin, deep, tender red slit in her vulva. He stretched out his tongue and licked it.

"Ah… Brother…" Wang Xin'er couldn't help but let out a sobbing, plaintive moan. Her slender legs immediately clamped tightly around Wang Yue's head, and her calves tightened inward, pressing down on his back, as if she wanted to force his entire head into her itchy, tender vulva.

Although Wang Yue, who had already licked the vulvas of Xue Yan, Chen Rong, and Su Mengqing, wasn't exactly an experienced man, the techniques he had developed were sufficient to please his innocent sister. He immediately took her entire "steamed bun" vulva into his mouth, sucking and lapping at it, and then licked her tiny clitoris with his tongue.

Wang Xin'er, who had never experienced this before, couldn't bear it. The intense pleasure made her clamp her brother's head even harder with her legs, her little bottom moving up and down, and she kept moaning, "Brother… Brother… Ah… Ah… Brother…"

After a while, Wang Xin'er's petite body shuddered violently, her tender vulva contracted, and a large stream of clear liquid gushed out from her previously untouched, tight vulva.

At the same time, a trace of vital energy was also released.

What a waste!

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