Public Toilet Idol Group - Yuki
Siyazaki was assigned to a public facility near the capital, Tokyo. It was terribly close to the agency where her group Yuki had been based. There, Siyazaki was used as Livestock No. 3—and Japan's very first toilet livestock.
She wasn't alone. Starting with her, a line of livestock assigned as toilet livestock began to arrive. Most of them initially served with only their upper bodies exposed.

Right next to Siyazaki was Sakura, her former Yuki bandmate, assigned as a mouth toilet. Sakura's eyes were covered, and Siyazaki couldn't see her from her position, so she had no idea the livestock beside her was Sakura. But she could certainly tell someone was there.
The relentless thrusting into her throat, the gagging sounds as it pressed against her uvula—they echoed without cease. "Glurk, gluck." Just as constant were the slurping sounds of her tongue working something over. Semen erupting from the men's cocks slammed into Sakura's throat. Her role was to take it all and swallow.
Sometimes, men would slide their dicks between her ample breasts for fun. Using tits like hers was pure bliss for any guy—a warm, soft water balloon rubbing against you? Word spread, and some even came specifically to her stall for that purpose. Still, the mouth remained the most popular. It was naturally wet and warm, after all.
Most users slammed their hips against Sakura's face with abandon. Holding a cock in her mouth meant balls slapping her chin, lower belly smothering her nose. Breathing became a struggle. And with a dick stuffed in, every breath reeked of it. After climax, the fishy stench of semen lingered.
That wasn't all. Sakura had to clean the spent cock, licking it spotless with her tongue before her shift ended. Occasionally, nasty users would cum on her face instead. Then, until evening cleanup after hours, the semen dried white crust on her skin.
But even that was better than Siyazaki's plight. Sakura could never forget Siyazaki's state when she first arrived here—ass exposed, nothing else.
Three days earlier, a throng of men lined up outside a Tokyo building. Word had spread that Yuki's top idol Siyazaki was becoming toilet livestock. At first, they thought it was a flyer rumor or fake news—but after her agency's official statement, everyone flocked.
A civil servant emerging from the restroom grinned. "Already this many? Impressive. As expected from a top idol."
"When can we start using her?"
"Prep's almost done—should begin soon. With this crowd, we'll need numbered tickets."
Tickets flew out past No. 100 in seconds. Siyazaki's star power was that immense.
No. 1 entered and froze, speechless. Beneath Siyazaki's photo hung the label <Livestock No. 3 Siyazaki>, with a woman protruding only her ass, immobile. Obviously her.
<Livestock No. 3 Siyazaki>
As he approached her ass, a recorded voice—Siyazaki's—played.
"Hello! This is Siyazaki! Today, fuck my pussy as hard as you want!"
No one could've imagined those words. The man's cock sprang up instantly. He ached to plunge in. Her pussy glistened slightly wet. Salivating, he spread her cheeks. A shy asshole peeked out, along with her sparsely haired slit.
He was a virgin. His first real pussy belonged to Siyazaki.
"...Wow, it's gorgeous. Such a perfect pink."
Ecstatic, he was a Yuki fan—Siyazaki's fan, specifically. Seeing the idol he adored, now his to savor? Overwhelming.
"Siyazaki's pussy... Can't hold back."
He buried his face in it. She shuddered at the sudden sensation.
"Huu... haa... Real pussy... Onaholes can't compare..."
Siyazaki trembled as his tongue invaded, but bound legs left her helpless. She thrashed inwardly, desperate.
Lust glazed his eyes. Unzipping, he aligned his cock with her soaked folds. It slipped in effortlessly.
Squelch! Slick sounds accompanied his thrust.
'It's in! No, I hate this!'
Eye contact might've been bearable—but used ass-up like this? Utter humiliation. Luckily, No. 1 barely moved, cumming after three or four pumps. Next up.
Siyazaki couldn't believe hot semen filled her.
'What if I get pregnant like this...?'
Worries flooded her. Unbeknownst to her, toilet livestock machines auto-contracepted from constant exposure. Hence her panic.
No. 2 came and went smoothly. Up to No. 12 satisfied themselves. But No. 13 was different—he carried a heavy leather bag.
"...Siyazaki... you filthy bitch."
What? Insulting her on entry?
"I liked you so much. And you end up like this cheap livestock...?"
A diehard fan, clearly. She wanted to protest, but no voice.
"...Sluts like you need discipline. Call this loving punishment."
'What?'
A powerful vibrator assaulted her pussy.
'Ah... aaaah.'
Her body quaked violently. Seeing it, No. 13's eyes reddened.
"...Knew you loved this..."
Anyone would've reacted, but rage blinded him. He teased her clit and urethra slowly, driving her to climax. Rare even for toilet use—no foreplay normally, just onahole treatment. Yet his fury pleasured her. He made her squirt repeatedly, scratching neglected itches.
Invisible face flushed, drool streaming. Pleasure was breaking her brain—she understood now.
Then, he pulled a blunt-tipped tool and rammed her ass without warning.
'Nngh!' Her back arched wildly, squirting uncontrollably.
"Cumming from just that? What a slutty idol."
He tormented her ass mercilessly.
'No... can't cum more... I'll break.'
In-out, in-out—he laughed at her spasms. Orgasms wouldn't stop. More perverts followed. Used relentlessly, Siyazaki's mind frayed.
Installation day: roughly 150 men. Some women too—perverted ones. Voiceless, no pleas for rest. No sobs. Just pray to pass out and wake later.

Day 10. Siyazaki no longer reacted. Neglected cleaning left her ass foaming white with semen. The disconnect from her idol photos deterred users. Numbers dwindled.