[Melts your brain!] Ecchi-Sis! ~I made a naughty request to my playboy yet devoted stepbrother...~

--Please teach me how to cum inside...!--

How will your stepbrother react to your earnest but "naughty request"...!?

Your extroverted(?) but languid stepbrother will love you as deep as he can dive into...
From sweet, soaking wet vaginal orgasm lesson to unstoppable cuckold sex that he won't stop even if you cry...!


[Story]
You are concerned how sex with your boyfriend is not working out for the two.
One day, you find out that your brother that you live together is a "playboy"...?

An extroverted boy who is quite languid.
Height: 177cm / Blood type: AB

He is a university student freeloading at his older sister's place.
He is good at housework in general.

In contrast to his whimsy and self-willed life, you have always been earnest and shy...and that is why he actually cares a lot for you.
Despite him constantly teasing you, he takes very good care of you.

He is generally is good at everything he does and has wide circle of friends...but to him, all of them are unimportant just like pebbles on the side of the road. He only cares for his sister.
He's aware of his ethics and love language being a little bit off from the norm, so I he has been hiding it from you, but...

Protagonist (You)
Ensuke's older sister.
Although not related by blood, the two grew up together and their relationship is as close as real siblings.
Even as an adult, you still call him "En-kun" and care for him dearly.

You are earnest but clumsy.
You made your first boyfriend after entering the workforce, but things are not going well with him for a certain reason...

1. "I live with my brother who's the complete opposite of me" (Approx. 5 min.)
Despite his looks(?), your stepbrother Ensuke is an excellent cook.
He seems to be happy as you tell him how much you enjoyed his lunch....

2. "Coming home late at night" (Approx. 3 min.)
You spend the night alone after Ensuke goes out for his part-time job.
You decide to watch a movie and plays a random DVD...but it turns out to be a porn!?
Since your sex with your boyfriend hadn't been going well, you can't help but watch it...

3. "Little brother's part-time job" (Approx. 5 min.)
Shocked from watching porn for the first time, you start to research about sex wanting to learn more...
Then, you find Ensuke's "secret social media account".
You take a plunge and makes a request to your "sex-savvy brother"...!?

4. "Studying about sex" (Approx. 22min.) [R18]
To solve your concern about your sex life, the two decide to "study" about sex.
Ensuke uses your "hand" to portray female genitalia and starts to give you an "educational" lecture, but...?

"Uh-oh...I was only genuinely trying to teach you...
But I didn't know you were too busy imagining naughty stuff and making your pussy wet...."

(ear licking, clitoral licking through underwear, clitoral teasing with tongue inside)

5. "Cum inside lesson on the couch" (Approx. 14 min.) [R18]
You are completely turned on and convinced to take things further by Ensuke's words, "It's just a lesson, it's not cheating."

"You sitting on my lap...It feels like we're lovers, doesn't it..."
"Oh... right here... near the cervix... I'll go gently...veeery gently..."

(kissing, ear licking, fingering in the lotus position, rubbing penis on the clitoris)

6. "Inescapable Sex" (Approx. 23 min.) [R18]
You know you cannot go any further, but your body cannot resist the urge and accepts your brother...
Then, you find out about Ensuke's true, devoted feelings...what will happen?

"Go ahead and cum. Here inside where it's really warm...it'll feel amazing if you fuck in there now..."
"Why not? Because we're siblings? Even though I've done naughty things to you already...?"

(ear licking, lotus position, kissing and fucking, raw sex, cum inside)

7. Extra track "Sex tape video letter" (Approx. 33min.) [R18]
You still can't seem to get over your boyfriend...
Jealous of her boyfriend, Ensuke starts filming a "greeting" to him...!?

"Haha...I've been rubbing your clit and it's lightly squirting again...here, look...
Your pussy just keeps squirting and squirting...so sexy..."
"I'm so glad...we're in love with each other, aren't we? I'm not forcing you to do anything, right? I love you...sister...I love you..."

(ear licking, sex tape, camera view of spooning position with legs open wide, nipple teasing, squirting, doggy style, prone bone , missionary position with kissing and fucking, nipple licking, cumming raw inside)

8. Cast talk / Hirame Ichijo (Approx. 5 min)

Duration: Main story ~70 min. + Extra track ~33 min. + Cast talk ~5 min.

[Disclaimer]
* This work contains the following acts and related expressions:
Direct sexual terms, cuckoldry (the protagonist has a boyfriend), menstrual cycle, raw sex on a "safe" day, and verbal teasing regarding impregnation.

* There are dialogues that remind of sexual acts between the protagonist and her boyfriend, or between Ensuke and others.
(Ensuke has no ~ACTUAL~ affection or feelings for any woman other than the protagonist.)
Please refer to the R18 sample for the examples of the dialogue.

* A woman's moaning voice is included at the beginning of track 2 as a sound effect while watching porn.
(The difference without the sound effect is included in the package.)

* The "Cum Inside Lesson" is a part of the play and is not intended as a development guide leading to a full-fledged portio / cervical orgasm.
Please enjoy the naughty sex lessons with your little brother!

* Regarding the [Lovey Dovey / Sweet Love] and [Coercion / Compulsion] tags:
It is lovey dovey from Ensuke's point of view, but he also tries to forcefully pin down the refusing protagonist, which may be construed differently from the listener's perspective.
Whichever point of view...please use your favorite interpretation and enjoy.

* This is a work of fiction. Names, characters, businesses, places, events and incidents are either the products of the author's imagination or used in a fictitious manner. Any resemblance to actual persons, living or dead, or actual events is purely coincidental.