Miku smiled with genuine delight. Her comment had been half-sarcastic, but it seemed to have no effect on the brainwashed girl. This was truly unfair to my cock.
It's practically dripping with drool. What a sight.
Both girls were completely fixated on the erect penis. Miku's eyes were so moist, I wondered if they were filled with heart symbols, while Yotsuba trembled with fear, yet couldn't tear her gaze away.
"So? Wanna touch it?"
"Can I? I want to touch it... I want to feel it...♡"
"Ugh, no! Miku, snap out of it...!"
Yotsuba pleaded desperately, but her words echoed futilely.
"I'll do it myself, so just...!"
"No, don't push yourself too hard...♡ Yotsuba has Fuutarou, and besides..."
As Miku got down on her knees, her face came to rest right in front of his erect penis. The contrast between her delicate features and the grotesque male organ created an undeniably lewd scene.
"I want to know more about you, Kamino-san... everything...♡"
Without hesitation, Miku took hold of his shaft with both hands and began stroking it gently up and down. Each smooth glide of her hands against his sensitive glans sent electric jolts of pleasure through him.
"Ooh...!"
"Hehe, you twitched. So cute...♡"
"Ugh, you little...!"
Her technique was clumsy, but the visual stimulation was overwhelming. The sight of such a pure and composed beauty serving him was so arousing it nearly made him come on the spot.
"Hey, hey, Yotsuba! Your older sister's hand is getting all dirty with my precum! What are you gonna do about it?"
"Ugh... Ugh... Uesugi-san, I'm sorry! I'm so sorry...!"
The other girl, with her bob cut, who had initially seemed equally pure but more spirited, was now completely subdued. Tears streamed down her face as she repeatedly apologized to Uesugi.
"What's with that sulky look? If you don't do anything, I'm just gonna take your sister's virginity right here."
"No, please don't do that...! I'll do anything you say...! I'll obey any order you give me...!"
"Then show me with your actions, you idiot! Start by getting on your knees and begging! Beg me to let you suck my cock!"
"Ugh... Ugh... Uwaaaaah!!"
Finally unable to endure any longer, Yotsuba collapsed to her knees, sobbing uncontrollably. Even her tear-streaked face was endearingly cute. A sweet tingling crawled down Kamina's spine.
"What's wrong with you?! Get a move on, you shitty bitch!"
"Guh... Ugh... Uw... Yotsuba, Yotsuba, I'll do my best...! I'll serve you with all my heart... So please...!"
Between sobs, Yotsuba pressed her trembling hands to the floor and lowered her head.
"Please, sir... let Nakano Yotsuba suck your cock..."
"...Heh. Heh-heh-heh! Uwahahaha! This is insane! Did you know your little sister was such a slut, Miku?!"
Yotsuba, kneeling on the floor, trembled slightly, her shoulders betraying her inner conflict. Miku, laughing heartily, addressed her from where she stood above. Yotsuba nodded, seemingly satisfied with Miku's understanding.
"I see. You just really want to make Kamino-san's cock feel good, huh? Just like you, Yotsuba♡"
"No... Ugh, yes, that's why I'm begging you, please switch places with me...!"
"Hehehe, got it♡ Now, bow your head lower. We need to make sure Kamino-san gets a proper look at Yotsuba's best features♡"
With that, Miku pressed down on Yotsuba's head. Half-conscious, half-brainwashed, the girl's forehead scraped against the floor as she pleaded in a voice filled with despair:
"Please, please, I beg you... Let Yotsuba suck your cock..."
"Hah, hah, hah! You guys are the best! Hey, Miku, keep her pinned down tight!"
"Umm...♡"
Following Kamina's orders, Miku kept Yotsuba's head pressed to the floor, pinning her body down so she couldn't move. Taking advantage of the situation, Kamina thrust his hips forward, wiping the tip of his penis with Yotsuba's ribbon, as if marking his territory.
"Ugh... No... Don't do that with 'my' ribbon...!"
"What? You're seriously this attached to a stupid ribbon?"
Yotsuba whimpered tearfully, her ribbon—shaped like bunny ears—being defiled. Kamina had to admit that the ribbon made it easy to tell her apart from Miku. But in the end, it was just a scrap of cloth. That was Kamina's take on it.
"Alright then, it's time for what you've been waiting for. Don't you dare close your eyes!"
"N-no... Don't show me...!"
Miku grabbed Yotsuba's hair, yanked her head back, and forced her to look up. Yotsuba tried to turn away from the raw, throbbing mass of desire thrust before her eyes, but Miku's hand clamped her jaw in place.
"Come on, Yotsuba, give Kamino-san's cock some attention. It's so big, so thick, so manly!"
"Ugh... Miku..."
"It's all wet already. You must have excited him with how cute you are. Lucky you, Yotsuba."
"Ugh, ugh..."
The situation was utterly humiliating: being forced to kowtow, being made to beg for a blowjob against her will, and being pinned down by her own sister. Kamina's excitement surged.
"Yotsuba-chan, just press your little face against my super big Magnum. That's all. Don't lick or suck yet."
"...Why?"
"Never mind."
Yotsuba timidly leaned closer, placing her hand between Kamina's penis and scrotum. Then, slowly, she pressed her small nose against him.
"...Suu, haa, suu, haa..."
"Haha! You're actually breathing on me!"
"Mmm... Suu, haa, nnn... Suu, no, I can't...!"
Though tormented by the Demon App's induced affection and arousal for Kamina, Yotsuba couldn't suppress her disgust at the direct smell of her own sweaty crotch. Tears welled in her eyes from humiliation, her face flushed crimson.
This is... more arousing than I thought.
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