https://www.pixiv.net/en/artworks/83737378

Story:
Mikumo couldn’t tell how long she’d been like this.

After investigating the disappearances of her missing idol compatriots Mikumo was ambushed and captured. When Mikumo awoke she was alone in a small metal cell with the door wide open mere inches away from her. However, no matter how hard she tried she could leave her prison due to her restraints.

A leather armbinder crushed Mikumo’s arms together from her fingertips up to her elbows, ensuring her arms were completely useless to her. A web of straps wrapped around her shoulders and her breasts ensured that the devious device would not slip down. Ropes tied above and below her breasts emphases her lovely rack, and also served to pin her arms to her back. More rope tied her legs together at her ankles and above and below her knees, locking them together as a single unit. Her captors had also used additional ropes to tie a vicious crotchrope, cutting into her as it lifted part of her skirt up, exposing her panties. Her body was kept in place by leather belts that were tethered to the walls next to her, strapped tightly around her shins, thighs, and waist. To top it off chains were connected to a collar around her neck, ensuring Mikumo could barely move a muscle. Mikumo’s cries for help were silenced by a harness ballgag, its straps partially obstructing her vision and causing her to drool. A tube extending from the wall was connected to the ballgag.

When Mikumo awoke all her senses were assaulted at once, the tight restraints restricting her among other things but she realized quickly that her captors had given her other things to torment her. Two vibrators were placed on each breast, its vibrations causing Mikumo’s nipples to become erect. Four vibrating eggs were inserted inside her, with their boxes tucked into her thigh belt, completely out of reach of her bound hands. Evidence of their handiwork ran down Mikumo’s thighs.

Eventually, a female Windemerean approached the bound idol, wearing a sinister look in her eyes.

“Well my dear Mikumo welcome to your new home! Your teammates can’t save you as they are currently being trained in cells next to you. Don’t Cry! You’ll be soon accustomed to being a slave. Once the aphrodisiacs are administered and the vibrators allowed to work their magic you’ll come to love your new life! Now let’s begin…”

Mikumo’s eyes widened as she moaned through her gag as the doors closed, sealing her fate...