Hiro knew he had a clear path to act, so he did.
He slowly slid one of his hands under Anna's skirt, first brushing the warm, trembling skin of her inner thigh. He wasn't rough; it was deliberate, torturously slow, letting every centimeter of progress heighten the tension that already had her on the verge of collapse. His fingers found the edge of her soaked panties and paused there for a second—just long enough for Anna to feel the nearness without direct contact yet.
Anna let out a muffled moan she tried to disguise as a tired sigh, but the sound came out too hoarse, too loaded. Her entire body arched backward against Hiro's without her being able to stop it, seeking more pressure from that cock that kept grinding against her ass in hypnotic circular motions.
"Shhh… nee-san," Hiro whispered against her ear, his voice a low, dangerous purr. "Don't make a sound. Remember: they can hear you. And if they hear you… they'll come."
Hiro's hand advanced a little further. His fingers slipped under the drenched fabric and brushed the swollen, slick lips of her pussy. Anna bit the back of her hand so hard she left red marks. Her knees buckled again, but Hiro held her by the waist with his free arm, keeping her upright against the counter.
She was drenched. More than Hiro had imagined. His fingers slid easily between her folds, finding her swollen, sensitive clit. He barely grazed it—a feather-light touch—and Anna let out a sharp "nngh!" that she couldn't fully contain.
From the living room, sudden silence.
Then Rina's voice, feigned casual but with a playful edge:
"Did you hear that, Mom? It sounded like… a little moan?"
Yuria replied in a soft, almost maternal tone:
"I'm sure it's just Anna trying something new in the kitchen. Sometimes breakfast turns out… very intense."
Footsteps again. This time slower, more calculated. Rina approached the hallway but didn't fully enter. She stopped right at the threshold, just where she could see both their heads and shoulders, but nothing of what was happening below the counter.
Hiro didn't stop. On the contrary: he slowly sank two fingers inside Anna, curling them upward in search of that spot he knew would drive her insane. Anna tensed completely, her back arching against Hiro's chest, her mouth open in a silent scream that only came out as a ragged gasp.
"You're dripping, nee-san," Hiro murmured, moving his fingers with torturous slowness. "Your pussy is sucking my fingers like it never wants to let them go. Does it turn you on so much that you're about to get caught? That Rina is right there, two steps away, and all she has to do is lean in a little more to see you like this… with my fingers inside you?"
Anna shook her head frantically, but her hips betrayed her: they pushed forward, seeking more depth, more friction. Tears of pure sexual frustration gathered at the corners of her eyes.
Hiro sped up the rhythm of his fingers a little, his thumb now pressing firm circles over her clit. The wet sound was unmistakable, even though she tried to mask it with the residual sizzling of the forgotten pan.
Rina took one more step toward the kitchen. Now she was in the doorway, leaning slightly, with a smile that said she knew exactly what was happening.
"Anna-nee?" she called sweetly. "Are you sure you don't need help? You're… really red. And breathing funny."
Anna tried to answer, but only a broken moan came out when Hiro curled his fingers harder against her G-spot.
Yuria appeared behind Rina, resting her chin on her shoulder, feigning maternal concern.
"Honey, if you're not feeling well we can stop breakfast and take you to rest…"
Hiro felt Anna's pussy clench violently around his fingers at those words. She was right on the edge. Completely on the edge.
He suddenly pulled his fingers out, leaving her empty and shaking. Anna let out a sob of pure desperation, her hips moving on their own in search of something that was no longer there.
Anna trembled all over, tears running down her cheeks, her apron wrinkled, her skirt hiked up to her hips, her soaked panties pulled down to mid-thigh from Hiro's movements.
She looked toward the doorway, where Rina and Yuria waited with identical smiles.
And then, in a broken voice, barely a whisper that everyone heard perfectly:
"N-No worries, Mom. Hiro and I will make breakfast."
Hiro smiled, knowing Anna was completely at his mercy.
Hiro turned Anna gently but firmly, positioning her facing the doorway. He pulled her skirt all the way up, exposing her lowered panties and her glistening, fluid-soaked pussy.
Hiro placed the tip of his perfect cock right at Anna's entrance, rubbing against her without entering yet.
He played with her vaginal lips for a while before slowly pushing in.
"Unnnnmm!!" Anna bit her lower lip hard while bracing herself against the pantry.
"Are you okay, sweetheart?" Yuria asked, one hand on her slightly flushed cheek.
She knew perfectly well what was happening, and it excited her immensely.
Her eldest daughter, the pride of the family. One of the best students at school, student council president, the ideal student… and right now she was being penetrated right in front of her!!
"N-Nothing's wrong, Mother," Anna said between gasps. "Hiro and I are cooking something very special. Please wait in the living room."
"Wow, really?!" Rina looked excited, and a conspiratorial smile appeared on her face. "Then we'll wait eagerly for breakfast."
Both of them stepped back and returned to the sofa, while Hiro was already out of control.
He forcefully tore Anna's skirt off—it was only getting in the way. He grabbed her hips and with one strong thrust buried himself completely inside her.
"Hooookkkk!!" Anna let out a choked scream while Rina and Yuria laughed a little.
But Anna didn't hear them—or if she did, she didn't care in the slightest.
The moment Hiro's cock filled her completely, her former sweet and kind personality vanished in an instant.
Her eyes began to shine as a huge smile of pleasure spread across her face.
Even though he's my little brother!
Even though I know we shouldn't do this!
When I think that it's his cock that's penetrating me, my body starts to tremble!!