On my bed, in my room, with her face buried in my used tissues, fingering her pussy while moaning like a total slut...
"Nn♥ Ahh, ahh, ahh♡ This is bad♡ I'm gonna cum! I'm cumming! Cumming♡"
"Oh♡ Shit♡ Ohh, ohh♡ I'm cumming! I'm cuuumming!! Oooohhhhh♡♡♡ Onii-chan♡ I love you♡ I love you so much♡"
There was no mistaking it. It was my little sister.
"...Madoka... What the hell are you doing...?"
"......"
After a brief moment of silence,
"Hehe~ You finally caught me, Onii-chan~"
"'Caught you'? What the hell were you doing!?"
"Even though you already know, you still bombard a girl with questions. Onii-chan, you're surprisingly sadistic, huh~"
With her flushed face, she smirked and brushed her glossy hair back.
"I was in the middle of having fun... using Onii-chan as my fap material♡"
...Huh?
Using me as your what?
What the hell is this girl saying?
A virgin with a serious sister complex, Aoyama Kazuya’s only pride is that he has a cute, big-breasted, and extremely perverted little sister who is two years younger than him and very open-minded about lewd things.
One spring day during his third year of high school, while he was secretly lusting after her, he unintentionally witnessed her secret — and from that moment, the siblings' high school life began moving in a completely unexpected direction.
His little sister, Aoyama Madoka, has awakened "Ani-Dick Cells," granting her superpowers. However, if the activation of these cells continues, she will die the moment she graduates from high school...
To save his sister, they need a special antibody that is only produced in the bodily fluids of perverted women at the moment of climax.
Thus begins the operation by this brother-sister duo (who are basically a perverted couple) to conquer various fetish girls and obtain the antibodies needed to save her life.
Exhibitionist disciplinary committee member, Vibrator Tea Ceremony Club, Body Paint Art Club, Saliva-selling JD terrorist, Pool Pissing Swimming Club, Baby Play Student Council President...
Just how many perverts does this school have!?
Will the brother and sister be able to satisfy the desires of these special fetish girls and successfully obtain the antibodies...?
