Hot water and white foam spill over the edge of the tub.
Chris Kendrow soaks quietly, his body half-submerged.
Behind him sits his older sister, Alexia Kendrow, twenty.
Her legs are spread, and Chris rests between them.
His back leans against her large, soft boobs.
«Today officially begins your adventure at the HESPARC Academy... are you happy, little bro?»
Alexia speaks softly, her hands gently brushing against his chest.
Chris nods silently, but his heart pounds with excitement.
The HESPARC Academy stands on a remote island in the Atlantic.
It's a special military facility where Monster Reapers are trained—elite operatives who protect the world from demonic threats.
Normally, only those aged eighteen and up are allowed in, but sometimes, rare talents are admitted early.
But that's not the only reason he's so happy.
«Y-Yes, big sis... I'm excited to attend the academy and fight strong opponents... but what really makes me happy is that we'll finally be together every day...» Chris murmurs shyly.
«Ever since you started going to the HESPARC Academy, I barely saw you. Only during the short visits when you came back home. I've felt so alone without you, big sis...»
«Oh, Chris...»
Alexia sighs, her face red from both the heat and his words.
She wraps her arms around his neck from behind, her chin resting on his shoulder.
Their cheeks touch, skin to skin.
«...I missed you so much too, little bro... I felt so lonely without you, especially at night...»
Alexia's right hand, which was gently caressing his chest, slowly moves down.
Her fingers trail softly to his belly, brushing over his abs.
As soon as Alexia's hand brushes over his stomach, Chris jolts.
His breath catches—shallow and uneven.
There's a weight in his chest, something strange and hard to name.
They've bathed together before—the last time was three months ago.
But this time feels different.
There's something new stirring inside him—something he doesn't understand.
«...Sleeping without you at night is so hard...» Alexia whispers, her voice low and breathless as her hand keeps moving along his belly.
«The bed feels cold... so empty... It's been two years since I started at the academy, but I never got used to falling asleep without holding you close. Finally, now that changes...»
She hugs him tighter, her arms firm around his chest.
Her boobs press more firmly against his back.
Chris can feel her hard nipples through the contact.
He tilts his head back, resting it against her breast.
He lifts his gaze to her deep, beautiful eyes—the same blue as his.
«Y-You're so beautiful, big sis...» he whispers.
His voice is faint, almost trembling.
Alexia smiles.
Her left hand rises, stopping gently beneath his chin.
She tilts his face upward, slowly.
«You too, Chris... you're the most beautiful little bro in the world... I love you.»
Her voice is soft, filled with warmth.
Her lips are parted—soft, full, inviting.
Her tongue flicks out, just a breath from his.
And then...
She brushes his lips with the tip of her tongue.
A slow, sweet caress.
Their half-lidded eyes meet...
The soft sound of their tongues intertwining fills the warm, steamy air of Alexia's dorm bathroom.
A delicate kiss—their personal way of showing affection for the past two years.
Alexia's hands slide over his body.
She strokes his chest.
Then his belly.
Her touch moves lower.
His thigh.
Then his pubis.
«L-Little bro... you've become... you've really gotten good at kissing...» Alexia pants.
Her words come out muffled as their tongues entwine.
«Did you... maybe practice with some girl while I was away at the academy?»
Chris blushes and he just shakes his head.
«I-I'm sure... I'm sure that when you grow up, you'll break many hearts...» she continues.
Her tongue moves faster inside his mouth.
«But I... I'm already grown up, big sis!» Chris exclaims.
His voice wavers between a scolding tone and quiet sadness.
It's clear that the words "when you grow up" hurt him.
«You're... you're right, little bro... in my eyes, you're still that child who couldn't sleep unless his head was resting on my breast. But now you're at HESPARC Academy.
You're becoming a man now... my man...»
At those words, Chris feels a weight in his chest.
His heart pounds wildly.
Something stirs inside him.
Something is growing...
«L-Little bro...» Alexia pants.
Something brushes her hand—the one caressing his inner thigh.
His erection.
She slowly pulls her head back.
Her tongue slips from his mouth.
«W-What's wrong, big sis...?»
She's flushed.
She stands still for a moment, wide-eyed and dazed, lips parted.
Then, she smiles and shakes her head.
«Nothing, little brother. Nothing... you're just becoming a man... A man with natural instincts. With desires...»
But Chris looks puzzled.
His head tilts up, the nape of his neck resting on her chest.
He stares at her, confused.
«I don't understand, big sis. What are you referring to...?»
Alexia's hand slips again between his thighs.
«I mean this, little bro...» she murmurs.
She gently taps the tip of his foreskin with her index finger.
«...this is undeniable proof that you're really becoming a little man. It gets this big when you're with a woman you have strong feelings for...»
Chris watches her closely.
He contemplates her every move, every word—like she's a goddess.
And to him, she truly is.
For as long as he can remember, Alexia has been the person he admires most.
She's strong.
Beautiful.
Intelligent.
One of the top freshmen in the entire academy.
Chris has always emulated her.
He's always wanted to be like her.
To be with her.
Now more than ever.
Alexia has never stepped down from her role as an idol on a pedestal.
She has taught her beloved little brother everything she learned at the academy.
She's turned him into a precocious prodigy—one who earned entrance to HESPARC Academy three years ahead of schedule.
«And now...? What should I do, big sis...?» Chris asks.
His eyes drop to what's peeking between his legs, blurred by water and foam.
She smiles again, sweetly—but with a hint of mischief.
«You say you've grown up... If that's true, you shouldn't have to ask me.»
Then Alexia looks up at the clock hanging above the bathroom mirror.
«Oh crap, I'm super late for the opening duel!» she exclaims.
She suddenly jumps to her feet.
Her athletic body, toned yet curvy, fills Chris's vision.
Foam and water slide down her smooth, naked skin.
She leaps out of the tub and begins to dry off and get dressed in a hurry.
«Make sure you're in the stands cheering for me, little bro, okay? I might be your beloved big sis, but you know that when I get mad, it's serious trouble!»
Chris gulps and nods silently, clearly intimidated.