As the name slowly sank in, Ms. Yukizome and Mahiru turned their heads slowly to look at Hiyoko in disbelief.
"H-Hiyoko... i-is this true?" Mahiru stammered, astonishment overcoming her agony temporarily, the pain of betrayal evident on her face. "Am I on the f-floor, p-pain in my p-pussy and b-breasts... because of you? Of all people, you? D-did you d-do this? Answer me, Hiyoko!"
"I- no- I didn't mean-" Hiyoko stammered. "It wasn't me!"
"Yes it was." Chiaki said flatly.
"I- I saw it too," Peko affirmed.
"I- I'm a-afaid s-so..." Mikan trembled, but those who looked closely could see a glint of satisfaction in her eye.
"You-" Chisa glared at Hiyoko, fury on her face. "Why you little-! I'll-!"
"WAGHHH!" Hiyoko abruptly burst into tears. "I'm sorry! I didn't mean to hurt you!"
"Hiyoko-" Mahiru was exasperated, managing to rise to her knees, despite her pain. "Please be quiet-"
"SILENCE!" Sonia ordered authoritatively. "Your foolish pleas will not save you from justice now!"
So focused was she on exerting her princess authority, that Sonia failed to see where she was going. One disastrous misstep put her right over the cuntbusting machine, and triggered the motion sensor.
The boot swung up and nailed Sonia right in the clit with improbable accuracy, crushing it in one blow.
"AAAAHHHH!" Sonia shrieked in horrified agony, as she crumpled forward onto the machine, her hands cupping her crotch. "My clit! My clit!"
Urine soaked into her dress and seeped through her fingers as she pissed herself from the pain. Her face turned red and tears came to her eyes both from pain and humiliation. "Jesus, god fucking damn it! It's so ruined...!"
"Hiyoko-!" Chisa glared even more intensely at Hiyoko, as Chiaki and Peko rushed to help Sonia, careful to circumvent the dangerous cunt-crushing machine.
"Wait, wait!" Hiyoko gestured her arms desperately. "M-Mahiru- Ms. Yukizome- are- we- are good, right?"
"Hiyoko, this is unforgivable," Mahiru stated coldly. "I though you were my friend."
"What- no-" Hiyoko fell to her knees and prostrated before Mahiru on the bathroom floor. "PLEASE! FORGIVE ME! I beg of you, Mahiru onee-sama! I'll do anything!"
Mahiru turned away from Hiyoko, limping away slowly and painfully (she likely wouldn't be walking straight for at least a week), deliberately snubbing her friend.
As Hiyoko crumbled into incoherent sobbing, Chisa seized the dancer by the collar, a furious look on her face. " I am going to make you hurt like you never hurt before."
Some time later...
Hiyoko moaned in helpless agony as she tried in vain to squeeze her legs together. She had been stripped to her underwear, handcuffed, chained with a collar around her neck to force her to lean forward, and by far the worst, her thighs now straddled a brutal metal delta horse right between her legs. Her ankles were chained below the horse, and urine soaked the sides of the horse from when Hiyoko had initially wet herself from the torture.
All her weight (plus chains and cuffs) were almost completely on her sensitive womanhood and delicate clit.
"Now do you get the consequences of your actions?" Chisa glowered, her rage not deflated at all. Her typical housekeeper attire looked even more strikingly out-of-place against the backdrop of the terrifying dungeon they were in.
"Please...!" Hiyoko moaned hoarsely. "I won't do it again! I'll do anything! Please, just get me out of here!" Tears streaked down her face, which was twisted with excruciating pain.
"That's what you said when you wedgied Chiaki... and drugged Peko... gave Mikan a swirlie... and put itching powder in the boys' briefs! It's clear I should have punished you then!" Chisa remarked irately. "You know what? Maybe I'll leave you here for a night! Perhaps then the lesson will stick!"
"What?!" Hiyoko gasped in horror. "NO! I'll die! Please, I can't take anymore of this!"
"Hmm... then perhaps our class will be down one hell of a vile nuisance," Chisa replied coldly to Hiyoko's begging, turning her back on the suffering girl. With that, she ascended the stairs out of the dungeon and locked the trapdoor behind her, leaving her wayward student to stew alone in her torment.
Left in the dark, Hiyoko had no choice but to moan and endure a long night of agonized suffering.