Hiro stared at Rina in silence for several seconds, savoring the genuine fear he saw in her eyes. The room was dimly lit, illuminated only by the bedside lamp, which made the scene feel even more intimate and cruel.
"Remove the gag," Hiro ordered Yuria in a low, cold voice.
Yuria obeyed immediately, unfastening the ball gag. As soon as it was removed, Rina gasped for air between sobs.
"H-Hiro… please… I'm sorry… I'm really sorry…" Her voice was a trembling thread, broken by crying. "I won't do it again… I swear I won't let anyone else touch me… please, forgive me…"
Hiro looked at her with no mercy. He grabbed her hair tightly and yanked her head back, forcing her to look directly into his eyes.
"Forgive you?" he repeated with a smile that didn't reach his eyes. "After I saw you letting that son of a bitch squeeze your tits like they were his? After I saw you standing there, soaking wet, breathing like a bitch in heat while he groped you?"
Rina sobbed harder, tears falling uncontrollably down her cheeks.
"I… I was scared… I didn't know what to do…"
"Lies!" Hiro snapped, pulling her hair even harder. "You loved it. I saw your face. You got wet. You're a whore who gets excited by danger and blackmail. And I'm going to remind you exactly who you belong to."
He turned to Yuria.
"Mom, the clamps and the small whip."
Yuria took out two metal clamps with teeth and a thin black leather whip from the box. Hiro took the clamps and, without warning, clamped them hard onto Rina's nipples.
"Aaaahhh!" Rina screamed, violently arching her back. "It hurts! Hiro, please, it hurts so much!"
Hiro tugged on the chain connecting the clamps, making Rina twist in pain.
"This is only the beginning," he said calmly. "You're going to learn that your body is no longer yours for anyone to touch. Your pussy, your tits, your mouth… everything belongs to me and only me."
He positioned himself behind her and, without any lubrication or preparation, aligned his thick cock against her asshole.
Rina's eyes widened in terror.
"No… not there! Hiro, please, no! I've never done it in the ass! You're going to break me!"
"Exactly," he replied, pressing the head of his cock against her tight anus. "You're going to feel what it's like to be truly used. Without mercy. Like the traitor you are."
With a slow but relentless thrust, Hiro began to penetrate her virgin ass. Rina screamed with all her strength, her body tensing like a bowstring as her asshole was forced open around her brother's thick cock.
"Aaaahhh!! It hurts!! Please, take it out!! I'm begging you!!"
Hiro didn't stop. He kept pushing until half his cock was buried inside her ass. Then he started moving, fucking her with short, deep thrusts that grew increasingly brutal.
While he mercilessly sodomized her, Yuria knelt in front of Rina and began licking her clit, forcing her to feel pleasure even through the pain.
"Shhh, my love," Yuria whispered between licks. "Mommy is helping you. You have to learn to be a good sister. You have to learn who you belong to."
Rina cried inconsolably, her body convulsing between the intense pain of her asshole being destroyed and the forced pleasure Yuria was giving her with her tongue.
Hiro gripped her hips tightly and sped up, fucking her deeper and deeper.
"Say you're my whore!" he growled, tugging on the chain of the clamps.
"I'm… I'm your whore!" Rina sobbed between screams. "I'm your whore, Hiro! Only yours! Please… forgive me…!"
Hiro didn't stop. He continued fucking her ass without mercy, each thrust more brutal than the last, while Yuria kept licking her clit nonstop.
"You're going to cum with my cock in your ass," Hiro ordered. "And you're going to thank me for it. You're going to thank your brother for punishing you the way you deserve."
It took Rina less than a minute to break. A violent orgasm tore through her, making her asshole clench hard around Hiro's cock as she screamed and cried at the same time.
Hiro didn't stop. He kept fucking her through her orgasm, prolonging the punishment until Rina was left hanging limply from the chains, exhausted, trembling, and sobbing uncontrollably.
Only then did Hiro pull his cock out of Rina's red and swollen asshole and cum hard across her back and hair, marking her completely.
He leaned over her and whispered coldly in her ear:
"This is only the first day of your punishment, Rina. Every time you think about betraying me… you'll remember this. Every time someone tries to touch you… you'll remember this."
Rina could only sob weakly, her body destroyed and her mind completely broken.
Hiro turned to Yuria, who was looking at him with adoration and excitement.
"Leave her like this all night," he ordered. "We'll continue tomorrow."
Yuria smiled with devotion.
"As you wish, my love!"
Hiro left the room without looking back, leaving Rina tied up, used, and crying silently.
The punishment had begun.
And it would be long.
On the other hand… Yuria followed him faithfully like a loyal puppy.
He was very surprised by her blind loyalty and submission.
Of the three Komiya women, he had thought she would be the hardest to handle. After all, she had slept with a large number of men in the past, and of the three, she was the only one who was actively being unfaithful.
Unfaithful to her husband — who, by the way, was also Hiro's father.
Hiro didn't care. He didn't know the man, and even if he did, he would despise him.
How could someone have such a beautiful and horny woman at home and not be able to satisfy her?
Shaking his head, Hiro approached Yuria and suddenly grabbed her ass.
"Bad actions deserve their punishment…" Hiro lifted Yuria's skirt and used his hand to spread her two large ass cheeks, playing with her pussy. "And good actions deserve their proper reward."
"Mnnnn!!" Yuria shivered with pleasure.
"Let's go to the living room," Hiro whispered. "I want to do it in front of the unconscious Anna."
"As you command, my Hiro!!"