Ichika: "Well, we're heading back then. You two have fun."
Yotsuba: "Bye-bye~"
Itsuki: "See you tomorrow."
As the party wound down and they finished a quick shower, the three sisters returned to their room, waving goodbye to Nino and Miku, who were still physically linked. Seeing the pair in such a ridiculous state, the sisters could barely contain their laughter.
Nino, however, shot them a glare so murderous it suggested she would slaughter anyone who dared to let out a peep.
The sisters managed to keep a straight face while in front of her, but the moment the front door clicked shut, peals of unbridled laughter drifted up from the yard.
Upstairs, Nino and Miku's faces flushed a deep crimson.
"Hey! They're gone! Undo this now! I gave you face in front of them, but they're gone, so let us go!" Nino reached for the clamps on her chest, trying to pry them open.
They didn't budge an inch.
"These clamps have a lock," Rin said smoothly. "Once they're on, you need a special tool to open them—unless you use brute force, which I wouldn't recommend for your nipples. Don't look at me like that; I only did this because I love you and want you two to get along."
Rin spoke with a smile, but the clamps were actually system-provided items utilizing spatial anchoring. No matter how hard they pulled, they would never break free.
Nino was fuming, but what could she do? He claimed it was for the sake of their sisterly bond. "Hmph... fine. Until tomorrow morning at the latest!"
Miku looked at her sister, her expression hesitant. "You total love-brain! You actually believe that? Just because he says he loves us, he can do whatever he wants? I... I don't want to be stuck to her." Miku puffed out her cheeks in protest.
"If you can endure until tomorrow, I'll give you a surprise," Rin promised.
"A surprise?" Miku frowned slightly, but the word 'surprise' was enough to make her yield to Rin's perverted whim. "Fine. But how are we supposed to shower like this?"
During the sex party, it hadn't been too bad; they were mostly stacked together while being fucked. As long as they held each other tightly, the chain wouldn't yank. However, if they loosened their grip even slightly, the person on top would slide forward with every thrust of Rin's cock... Luckily, their breasts were supple and elastic enough to handle the tension, otherwise, the pain would have been excruciating.
Miku leaned back slightly, the chain stretching between their breasts, pulling their pale mounds into elongated shapes. The only thing connecting them besides the slender metal was the sticky mess of cum and fluids that acted like glue between their bodies.
"Since you're sisters, you should help each other. That's how you stop fighting."
"Hmph..." Nino snorted. Stop fighting? Impossible. They had been at each other's throats since they were kids. Just like his "Deep Research" sessions, this was just an excuse for Rin to satisfy his sick kinks.
But... she loved him. There was no way around it. If he wanted to play this kind of game, she would play along. She'd satisfy every single one of his fantasies until he was so addicted to the five sisters' bodies that he'd kick every other woman to the curb.
Plan initiated.
"Let's go to the bathroom... Hiss... Miku, walk slower... don't go so fast!"
"Nino, you're the one who needs to stop moving so much!"
"Don't rush," Rin called out from behind. "Just treat it like a ballroom dance."
The two sisters shuffled toward the bathroom, facing each other and baring their teeth every time the chain jerked. At first, their coordination was a disaster, but they soon found a rhythm, inching their way toward the bath.
In the room next door, Kaede was watching through the camera system, nearly dying of laughter. If she had known, she would have given Rin more gear—connecting their pussies together would have been even funnier.
Fun as it was, Kaede faced a serious problem: the progress of nurturing Ichika's cuckold fetish had stalled. Although Ichika had "come out" to her sisters about her kink and participated in the party—even drinking the "chicken soup" (cum) off her sisters' bodies—she hadn't progressed much further.
To Ichika, drinking from her sisters was easy to forgive because they were family. The "NTR" element wasn't strong enough. Kaede needed to find someone else to "cuck" her.
While Kaede plotted, Rin had successfully guided Nino and Miku into the shower. Standing was fine as long as they pressed their bodies together, but anything else—like using the toilet or washing—was a logistical nightmare. The only saving grace was that they were already naked; if they had to navigate taking off pants, they would have just stayed dirty.
"Miku, move back a bit, I can't reach the handle... Not that far! Your ass is blocking the knob!"
"Don't push so hard...!"
Rin stood by, enjoying the show as the sisters battled the showerhead. Since both had large breasts, any push resulted in them bouncing off each other. Their skin was slick with sweat, soap, and Rin's juices, making it incredibly hard to maintain a grip.
After several failed attempts to turn the water on, Nino glared at Rin. "What are you staring at? Help us!"
Rin obliged. He grabbed the showerhead, adjusted the temperature, and aimed the spray at them. The warm water felt heavenly, but a moment later, both girls stiffened.
There are two kinds of people in this world: those who pee in the shower, and those who lie about it.
"I... I'm warning you, Miku... don't you dare pee," Nino said, her face turning red.
"You're the one... you better hold it in."
Normally, they would just go while showering and let the water wash it away. But now, even with the water running, it would inevitably hit the other person. They weren't like Ami and the others who were used to being golden showered; Nino and Miku were still "beginners," and their faces were turning scarlet from the strain of holding it.
"Holding it in is bad for your health. Let me help you~" Rin smirked.
He turned the showerhead upside down and pressed it against the junction of their thighs. The thin, high-pressure streams hit their sensitive slits directly.
"Don't hold back. There's no room for shame between sisters. Only after you've been completely honest with each other's bodies can you truly get along." Rin pressed the spray closer.
"No... take it away... Ahhh!!!"
"I'm... Ungh!!!"
Miku let out a cry as a hot stream, distinct from the shower water, sprayed out. Seconds later, Nino followed suit.
Nino: "Pervert! Pervert! Pervert!"
Miku: "Uuu..."
They leaned on each other, panting. Before they could recover, Rin pumped a glob of body wash onto their backs and between their chests.
"Since you're sisters, you should wash each other."
Nino, now completely exposed and humiliated by her loss of bladder control, decided to go all in. He wanted to see them shamed? Fine! She'd give him a show!
Nino pulled Miku close, rubbing the soap into her back while swaying her hips. Their heavy breasts acted like sponges, lathering the soap between them as they ground against one another.
Nino turned slightly, making Miku face away from Rin. Then, her hand slid down from Miku's back, slipping between her sister's lush butt cheeks.
"Eeek!!!" Miku shivered. Since she couldn't see Nino's face, she panicked. "Ni... Nino?"
Nino didn't answer. She wasn't just washing. Using the soap as lubricant, she hooked her middle finger and slid it into Miku's tight puckered hole. She had seen how Nanami and Mashiro toyed with each other's asses during the party. If Rin wanted to see something shameful, she'd show him.
Miku shook her head helplessly, but she was trapped. "Nino... no... Ohhh!!!!"