The intense curiosity made Sajuna feel as if a million Rin Itos were crawling all over her skin.
Listening to the discussion between Rin and Shinju, Sajuna couldn't even begin to imagine what kind of toy Rin had prepared. According to Shinju, it had a "little light"?
What was a light supposed to do?
She wanted to know, she wanted to know, she wanted to know.
Beyond the curiosity, there was a heavy blanket of nerves, especially since this device was about to be used on her.
"Is... is it really okay? Sister hasn't been eaten by Big Brother yet, has she?"
"It's fine. It's not like she's sealed shut."
Sajuna instinctively held her breath. From their dialogue, this toy wasn't for her rear, but for her front.
Even though she was still a virgin, it was true she wasn't "sealed," but still...
"Ah!"
Sajuna let out a short cry of surprise. She felt something cold touch her body, which was already burning with arousal.
"Wh... what are you touching me with!? Uu..."
Rin didn't answer. He carefully guided the tiny toy inside her.
"Look, Shinju. Here is the proof of your sister's purity... well? Isn't it cute?"
"Eh... Mmm, it's very cute..."
"!!!!!"
Sajuna finally guessed what it was from Rin's words... a miniature camera!
No wonder it had a light! Without one, it would be pitch black inside; of course a camera needs a light!
Even though she knew what it was, Sajuna didn't dare speak. In her mind, the earplugs had just "accidentally" slipped... She couldn't let Shinju know she was deliberately acting as a depraved sister!
"It's so sticky. She looks quite wanton, doesn't she? She squirted just from one slap earlier... I wonder why the younger sister is so cute while the older one is so depraved?" Rin said with heavy implication.
"It... it does seem a bit like that." Shinju bit her lip, her eyes glued to the screen.
Who are you calling depraved!?
I'm only doing this to show you, Shinju!!
If it wasn't to help Shinju regain her confidence, how could she ever do something so perverted and wanton!?
Sajuna could only wail in her heart. After all, her ears were supposed to be blocked... For her sister's sake, she had to endure!
"Truly a depraved sister." Rin suppressed a laugh. "We can go even deeper, you know."
"Can Sister really not hear us? Just now... when Big Brother said she was depraved, she seemed to flinch."
"She definitely can't hear." Rin delivered a series of sharp slaps to Sajuna's rear. With every strike, Shinju could see a violent, visible reaction from Sajuna's body on the screen.
"Sajuna is just naturally wanton. Let's look a bit further in." Rin smiled as he pushed the camera past her "proof of purity."
This little device was effectively the same as Kaede's cross-section system. The system had tricked Kaede into redeeming it, claiming seeing it on a screen was more stimulating than just using the system interface.
Kaede had used it to observe Suzu's body; seeing it drenched in Rin's colors was indeed more intense.
Sajuna didn't dare move... she didn't want her first time to be stolen by a weird toy!
Gulp!
Watching the screen, Shinju kept swallowing hard from the tension.
Is Sister's body really like this... is mine the same?
"It looks like it hit the bottom," Shinju whispered.
"Not yet." Rin took a look. "At most, we're just knocking on the door."
Rin spoke while using the camera to poke and prod, and the view on the screen visibly became wetter and more lubricated.
This area was ten times more sensitive than her rear.
On the day they first met, Kaede had used a "Sensory Link" to connect Sajuna's upper and lower mouths, meaning her deepest core was being directly stimulated and trained.
While wearing the chastity belt, she had been trained by Rin's electric pulses. Though Sajuna was still technically a virgin, her interior had been fully developed.
Rin controlled the camera with one hand while using his other to toy with Sajuna's body. Unlike her earlier invitation where she wiggled her hips, Sajuna was now rigid, fighting with everything she had to endure.
"GUH-WOOOO..."
Exposing my shameful side is supposed to help my sister's confidence, not make her think her sister is a total freak!!!!
But...
Sajuna's willpower was strong, but her body refused to listen.
In the battle between mind and flesh, she was losing. Her body was screaming that it was the true master of Sajuna Kanai.
"!!!!"
For the first time being stimulated directly at the source, her ten toes curled until they turned white. Her lips were parted wide, but the sensation was so overwhelming she couldn't make a sound.
"She's like this just from a little poke. Shinju, do you want a turn?"
Don't treat my body like a toy!
Sajuna wailed internally, yet she remained committed to the act of hearing nothing.
"But... treating Sister like a toy feels a bit wrong."
Hmph, as expected of my dear sister!
"In that case, let's ask her. Shh, don't say a word." Rin removed Sajuna's earplugs and gave her ass a light pat.
"How does it feel? Do you want me to keep going?"
"No—" Sajuna stopped after one word. She was supposed to be the "perverted sister" for Shinju. If she said "no," wouldn't the whole plan fail?
She was doing this for Shinju!
Therefore...
"D... Don't stop."
"Don't stop, huh...?" Rin's face was a mask of pure malice. "Don't stop what? How do you want me to continue? Where should I toy with you? I won't know if you don't tell me."
Sajuna: "The... the deepest part."
Rin: "The deepest what?"
Sajuna: "The deepest part..."
Rin: "Deepest where?"
"..." Sajuna grit her teeth. He was deliberately making fun of her!
"THE DEEPEST PART! I SAID THE DEEPEST PART!"
Sajuna screamed in a fit of "broken" frustration. Anyway, this fit the image of a depraved sister. Mmm... this was for Shinju; it definitely wasn't because her body was too wanton!
The moment she screamed it out, Rin shoved the earplugs back in and set them to full noise-cancelation mode.
"See? She said don't stop. Don't worry... she said 'deepest part,' but we're barely at the entrance right now."
Since both Rin and Sajuna had given the green light, Shinju didn't refuse. She took the device from Rin and focused on the screen, moving it cautiously.
"Yes, just like that. See this spot? Point the camera right there. Don't be afraid, use a little force. You won't hurt her... right."
Under Rin's careful guidance, Shinju slowly probed deeper with the camera.
"Sometimes you can't just listen to what she says; you have to watch what her body does. Try to bully her a bit. Even if she says no, if her body is enjoying it, it's fine."
Rin paused, then continued casually. "By the way, there's a little button here. Shinju, try pressing it."
"What does it do?" While asking, Shinju had already instinctively pressed it. Only then did Rin speak.
"Electric shock."
"EEEYAAAHHHH!!!!!!!!"