"Kei, I'm back... Oh~ I didn't expect you, Rin Ito, and Moeha to be doing this kind of thing~"
Chika, just like Moeha, had only recently returned from hanging out with friends.
Unlike the school uniform Rin Ito was used to seeing, she wore a white camisole dress with a double-layered ruffled neckline.
For warmth and to cover her fragrant shoulders and collarbones, Chika also threw on a pink long-sleeved jacket.
Beneath her skirt, she wore white pantyhose, which Chika rarely ever used.
Normally, Chika wore white over-the-knee cotton socks.
But after the weather turned cool, she switched to pantyhose so she could still wear a skirt and look beautiful.
"Hehehe... I was wondering why Rin Ito wasn't downstairs guiding Miss Sahoto with her drawings."
"It turns out you're here guiding Kei and Moeha. You guys are sneaking snacks without inviting me!"
"..."
Hearing these all-too-familiar words, Kei hesitated to speak...
How did these sisters manage to come back at such a perfect time every single time!?
Now, Kei understood Kaguya-san a bit better. Kaguya-san was absolutely right!
They truly were the cancer of the Earth!
Being interrupted by both sisters in a row, Kei had officially entered her blackened state.
"Giggle, looks like I came at the perfect time, it's my turn now~"
Completely unable to read the room, Chika didn't notice the blackened Kei at all as she excitedly slipped off her pink jacket.
The moment her hand rested on the straps of her dress, Kei pressed her hand down on the straps.
A fake, humorless smile appeared on Kei's face as the corners of her eyes and brows twitched uncontrollably.
"Chika-san, let's go to the basement."
"Sure, sure~"
Having not thrown a party in a while, Chika had been craving it for some time now.
She had even been thinking about when to invite Kaguya for an orgy.
This was the perfect timing.
After helping Moeha get dressed, Kei grabbed the Fujiwara sisters by their wrists on her left and right, leading them out of the room.
Bypassing the living room where Orie and the others were, the four went down to the basement together.
Compared to last time, a few more bondage racks had been added to the basement.
The collection of training and punishment toys hanging on the walls seemed to have grown as well.
It seemed Moeha had been scouring the internet for quite a lot of these items.
Once the soundproof door of the basement was securely closed, Chika eagerly stripped off her jacket and dress altogether.
"Chika-san, come over here."
Wearing a fake smile, Kei pulled Chika over to a rack and cuffed her with a grin.
"Eh? Are we playing this kind of game today?"
Chika asked while cooperatively letting herself be bound by Moeha.
For Chika, who had quite a bit of masochistic tendencies, this kind of play was right up her alley.
Right after, Kei pulled Moeha over to the rack and cuffed her as well.
Unlike her oblivious older sister, Moeha had already noticed Kei's currently blackened state.
She submissively let herself be cuffed, not because she was a masochist like Chika, nor to soothe Kei's anger...
Being blackened was great! Moeha simply wanted to see Kei fall from grace and drown in her own desires!
Even though Moeha didn't have masochistic tendencies, being bullied by a blackened Kei was completely acceptable!
Kei pulled out two ball gags from a nearby drawer and stuffed them into the Fujiwara sisters' mouths.
The blackened Kei didn't speak a single word throughout the entire process.
And since she kept quiet, Rin Ito didn't dare to ask!
Only after finishing everything did the gloomy-faced Kei return to stand in front of Rin Ito.
"Ito-kun, now there's no one left to get in our wa—"
Creeeak...
The sound of the basement door opening caused Kei's expression to freeze completely.
"Look, Kaguya, they really are down here."
"The two insects have actually been tied up already. Well done~"
"..."
Kaguya and Hayasaka appeared at the basement entrance.
Hayasaka's upper and lower halves looked like they belonged to two different seasons.
Her upper body was bundled in a gray coat, while beneath her black pleated skirt were ordinary knee-high socks that completely ignored the cold.
Kaguya wore a long coat that reached her knees, paired with black knee-high socks identical to Hayasaka's.
"Kaguya-san..."
Lowering her gaze, Kei walked over to the two, grabbed them by their wrists on her left and right, and led them over to the empty racks.
Click!
Click!
Completely unguarded against Kei, both of them were seamlessly cuffed to the iron racks as well.
Utterly bewildered, Kaguya and Hayasaka cast their questioning gazes at Rin Ito.
Rin Ito shrugged and waved his hands, indicating he didn't quite know what was going on either.
Only after securing all four of them did Kei let out a long breath of relief.
"Ito-kun, now no one can interrupt us~"
Rin Ito helplessly ruffled Kei's silver hair; it seemed she was deeply displeased with being constantly interrupted today.
But... perhaps today presented a rather interesting opportunity.
"It seems you really hate being interrupted, Kei-chan."
"But... before we begin, why don't we punish the people who got in your way first?"
Kei Shirogane was an angel!
This was the shared consensus of Moeha, Chika, Hayasaka, and Kaguya.
Moeha was actually quite conflicted about Kei.
She wanted to see Kei fall from grace, yet she didn't want her to truly ruin herself.
If Kei completely lost herself, then a ruined Kei wouldn't be the Kei she loved anymore.
As for Rin Ito... he didn't have any particular opinion on whether Kei became corrupted or not.
But the intense contrast of a pure little angel like Kei punishing others was bound to be magnificent!
Rin Ito subtly instigated Kei to bully them.
"Punishment...? Th-There's no need for that, right? They can't interrupt us anymore anyway."
An angel truly remained an angel.
Even in her currently blackened state, the most Kei had done back in the bedroom was forcefully milk Moeha.
While forceful milking could technically count as a punishment, in a strict sense, it actually helped relieve their swollen, aching distress.
Sometimes, Moeha and Chika would ask Kei to help milk them, which was why her technique was so highly practiced.
"Your Chika-san is a masochist. If you bully her, it will actually make her feel amazing... Want to give it a try?"
Gulp...
Kei swallowed her saliva, feeling slightly tempted.
She genuinely wanted to punish the Fujiwara sisters for interrupting her, but her kind nature usually held her back...
However, if punishment felt like a reward to Chika, Kei truly wanted to experience it!
"For example, using this small crop, or this low-temperature wax candle."
"You can punish Chika while making her feel pure ecstasy at the same time."
"!!!!" The one who got excited wasn't the slightly masochistic Chika, but Moeha.
As expected of Rin Ito!
If Kei was merely allowed to drown in lust and degrade into a mindless slut who only knew how to moan wantonly, it wouldn't be interesting at all.
And Kei wouldn't be Kei anymore.
But Rin Ito wasn't trying to corrupt her.
Instead, while perfectly preserving her pure, innocent nature, he was making her entirely willing to punish others!
A Kei like this was absolutely the most delicious!
If it was this version of Kei doing the punishing, Moeha didn't mind being tormented at all!
"Is that true?" Kei asked with a hint of doubt.
Could someone really derive intense pleasure purely from being punished?
"If you don't believe me, just give it a try. A girl's proof of feeling good is always more than obvious, isn't it?"
"Then..." Kei cast a glance at Chika and gave a slight nod. "I'll give it a try."