"...My dick's gone?!"
Is it really so shocking when something that should be there is missing?
My stupid older brother, Caliber, was arrogant and foolish, and his very existence was nothing but a nuisance.
When I took off my brother's clothes, I found that something was missing between his legs.
In other words, your dick.
Instead, there is a single thin stripe stretched across the smooth, hairless area because the baby is still so young.
There is something that every man should have.
Even if you shrink to the size of a pea from the shock and fear of encountering a monster, you will not become completely powerless.
So there is only one conclusion...
The person he thought was his stupid brother was actually his stupid sister!?
"Caliba was a girl?"
No, that's impossible.
What's impossible is that I'm his biological brother. Even though I don't want to, we've been living together ever since I was old enough to understand.
Under one roof.
How ridiculous would it be to mistake someone for a different gender in a situation like that?
"No! I'm a man!"
After all, he said so himself!
"No, she's a woman! What's between her legs is clearly a slit pussy!"
A green fruit that has not yet reached full maturity!
The sinful scent is so strong that the ammonia smell that was previously unpleasant now seems sweet!
"Because...because women can't become knights...!"
"Huh? What do you mean?"
"That's what I was told, so in order to become a knight I have to become a man...!"
Hmm?
If we break down the story of Caliba, it goes something like this?
Caliba was blessed with the "vocation" of a Knight.
The Knight class is popular in the city. If you do well, you can get promoted and have a rich life, which is something to be envied.
Or maybe someone jealous told the Knight-class holder some false rumor?
This guy is arrogant on a daily basis and has earned him criticism from all over.
In truth, I don't know whether or not a woman can become a knight in this world.
Even though it's medieval-style, the details are different and it's a fantasy world.
However, I hope that the "kukkoro" culture of female knights will take root in this world as well.
"..."
And before him was a promising female knight in training.
Stupid Brother, now Stupid Sister Caliber.
"...A man has to have a dick."
"Huh? What's that?"
It's cute that Caliba still doesn't know about male genitalia.
"This is it."
I pulled down my pants and revealed the small magical beast that had been hiding inside.
My penis became fully erect, and as soon as it was released, it arched back as if pointing to the heavens.
Why is that?
"Hii?! What is this?!"
Caliba witnesses an erect penis for the first time in her life.
The look on his face shows fear.
"Why...?! Is there a stick-like thing growing out of the area where the urine comes out? If something like this is there, it'll be in the way!"
"Hmm, well, when there's no need for it, it changes into a form that doesn't get in the way..."
It's the mystery of life.
"Men have penises and women don't. This is probably the most obvious difference between men and women."
"So if I have a dick, I can become a man too!? Tell me how to grow a dick!"
Hmm, so far this is the most outrageous thing I've done since I was reincarnated.
Anyway...
"Try saying 'dick' again?"
"? Dick?"
"repeat"
"Dick, dick, dick, dick, dick...?"
nice.
It's good to make young girls say dirty words while they're still ignorant.
"Hmm..."
I look around again.
In the forest where they always say, "It's dangerous, don't go in." The bear monster that had been acting like it owned the place up until a moment ago was so badly beaten that it's unlikely it will return.
Although it is outdoors, the deep forest is like a closed room without walls, completely out of the public eye.
There's no one here but the two of us.
"For now, I'll hang up the pee-stained clothes on a branch and they'll dry eventually. I'll hang out my jacket too just to be safe."
"Eh? My jacket isn't wet though?"
"It's okay."
He makes the confused sister hold her arms up in the air and takes off her jacket.
With not only her lower body but also her upper body covered, Caliba was completely naked.
"Wh-why are you taking your clothes off too? You're not wet or anything."
"It's okay."
I took off my clothes as well and the two of us stood in the forest, completely naked, facing each other as brother and sister.
Grabbing both of Caliba's legs, who were weak at the knees and unable to stand, I spread them apart and rubbed my erect penis against her wide-open crotch.
"Huh? Huh? What are you doing? Huh?"
The glans moves back and forth along the beautiful slit.
It feels nice to be wet and slippery from incontinence.
Do you know why there are such differences between men and women?
"I don't know anything about that! I don't care, I just want to become a grown man!"
"Once you know the reason, women will think it's good too...!"
Nitch, nitch, nitch, nitch...
Rubbing your penis against the muscles in your groin is very sensual and pleasurable.
"Hmm? Yuhaaah, ah...?!"
There definitely seems to be some stimulation coming from the groin.
Caliva is also confused and tormented by the feminine sensations that she had previously rejected.
The slimy liquid from between her legs was increasing. A bodily fluid other than urine was definitely leaking out of this woman.
"What is this...? Something is... itchy around the pee area...?!"
"This is what's good about being a woman. It's a pleasure that only women can experience, you know?"
Men have their own pleasures.
Now, it goes without saying that Caliba is undoubtedly a virgin, and her body rejects the idea of her being a woman, so it's likely that even her sexual senses are not fully developed.
Even so, the buds are opening so easily, and the reason for this must be on my side.
My skills as a ``sex master'', my ``calling'', instantly blossomed in a woman's body that was not yet fully prepared to accept it, and there was no way for me to resist it.
"Good in bed," "God's hand," "Increased sexual critical rate (extra large)," "Pheromones (extra strong)"...
This area is able to develop the sexual sensitivity of even the most insensitive woman, making her melt.
While rubbing my penis against her slit, I touched her breasts with both hands.
"Hmmmm!?"
He stroked her flat area, still too underdeveloped to even be called a breast, but the protruding part was already clearly feminine, with pea-sized nipples.
No man could ever replicate nipples this big.
When he poked it with his fingertip, Caliba convulsed as if electrocuted.
"Hmmmmmm!? Hi!? Hiiiiiiiiii!?"
"Sexual Critical Rate Increase (Extra Large)" is activated.
With my smooth talk and skillful hands, even the body of Caliba, who refused to be a woman, was melting away.
Is this about right?
"Well, it's time for the real thing."
"Eh? Is there something more? Stop it, I've reached my limit. If you do anything more than this...no matter what you do I'll fly away! I'll go somewhere! Nooooooo!?"
The rod master uses his power to loosen the line sufficiently in a hole that should not have been ready yet...
...Slide!
"Ohooooooooooo!? Oh!? Ooooooooooo!?"
Is this the first cry of Caliba-nee-san as a woman?
Congratulations on losing your virginity so early!
I never thought I'd lose my virginity to my blood sister!
Anyway, it works.
Patches, patches, patches, patches, patches, patches...!
"Oh!? Oh!? Ohhhhh!? What is this!? A dick, a dick is stuck in my crotch!? It's stuck in there, I'm gonna die!"
"It's okay, it's okay, you won't die, you won't die"
Something unknown has happened to my body.
Of course, even my sister will want to cry, but I'll calm her down skillfully.
"All women are made to do this. They have organs inside their bodies that can swallow penises. Your body is just fulfilling its function."
"Why do I have to swallow dick?"
"Is that... to make you feel good?"
There are probably other things I should explain, but I'll skip that and focus on feeling good for now.
It's the first sex in this memorable reincarnation into another world!
Bang bang bang bang bang bang bang...!
The piston movement will also increase in pitch.
"Hmm?! Huh, oooooooooh?!"
"How is it sis? Does it feel good?"
"I don't really know... but my crotch is itching...♥♥"
As soon as we found out her gender, we started calling her "big sister."
It's also exciting to rape her while calling her sister.
"My dick feels so good in your pussy...! Let's have sex every day from now on...!"
"Ehhhhh♥♥ Hiiiiiiiiiii♥♥"
That way, your sister will understand the happiness of being born a woman!
"Nooooooo♥♥ My body feels so light♥♥ This is the first time I've ever felt this way, I'm flying, I'm flying, I'm flyinggggg♥♥♥♥"
"Haaaaah! Let's gooooooo!"
The first sex after reincarnation in another world naturally involves vaginal ejaculation.
Woosh, woooooooosh!!
"Ahhhhhh♥♥♥♥"
As soon as semen is released into her vagina, her whole body starts shaking and convulsing.
Her petite body shines with a mysterious lustre and becomes feminine.
"Hii♥♥ Hiiiiiiiiiiii...♥♥"
"Right? Women are good too, right?"
It's impossible to change your gender no matter how much you want to.
In that case, it would be best to have sex all day long and teach your sister about the happiness of a woman.
For me, there's nothing more wonderful than the fact that the person I've always found annoying is now living with me as my ideal sex partner.
"Sis, let's kiss, kiss."
"Huh? Squish? Squish...♥♥"
He does whatever he wants to the girl's body as she lies limp after her first orgasm of her life.
From now on, I plan to immerse my sister in sex and develop her into the kind of erotic woman I like.
That way, my sister would stop saying nonsense like "I want to be a man," and my penis would be satisfied, so it would kill two birds with one stone.
For now, I inserted myself into my sister's vagina once more. Her body, now sensitive from just having orgasmed, jumped up and down with a "Mmm♥♥ mmmmmm♥♥♥♥".
"Oh, my sister's pussy feels good. I'm going to have sex with her every day from now on. I'll definitely do it."
"Ahhhhh♥♥ Aah♥♥ Nooooo♥♥ The waves of pleasure are coming againuuuuu♥♥♥♥"
Exploring the forest with my brothers had previously been a nuisance and a waste of time, but from today on it was likely to turn into a blissful experience.
Like this, my life reincarnated in another world is going smoothly.