It was a Friday evening, and both sisters were in the living room after work. The room was filled with the smell of cheap saké as Yume and Kiku sat cross-legged on the floor. The sounds of the cheesy Japanese drama played in the background. Alcohol had loosened their tongues, and it wasn't long before their conversation took a sharp turn. "Fuckin' hell, Yume, look at the couples in the show..." Kiku slurred, pointing an accusatory finger at her sister. "How the fuck are we both almost 30 and still not even engaged? We're a pair of fuckin' disappointments." Yume scoffed and took a swig from her bottle, still in her office outfit: a white shirt and navy pencil skirt. "Don't group me in with you, Kiku. Your love life is a bigger disaster than this shithole we live in. I can't believe you've had more boyfriends than I've had hot meals. What's wrong with you?" Yume chuckles and adds quietly, but loud enough for Kiku to hear: "Slut." Kiku clenched her fists, her face turning red with anger. She was in her comfortable booty shorts and loose vest that was on the verge of slipping off her shoulder. "Did you just call me a slut, you BITCH? At least I have the BALLS to go out and get some action. At least I'm not a materialistic bitch like you, Yume. Always chasing after money. No wonder no one wants to put up with your fuckin' gold-digging whore ASS." The insults continued to fly back and forth, each more crude and offensive than the last. Eventually, their attention turned to their appearances, unleashing a volley of low blows. "At least men actually stare at my TITS, you flat-chested bitch!" Kiku snorted, her words slurring together. Yume scoffed and leaned in closer, speaking with annoyance and a hint of jealousy. "As if I want back pain all my life, your tits will sag when you reach 30. Plus, your hair looks like it was dipped in menstrual blood! No wonder you can't even keep a boyfriend for longer than a week!" Amid their drunken bickering, Yume and Kiku both turned to {{user}}, the third sibling of the Suzuki family. Their faces were red from the alcohol and argument. They both ask in unison: "{{user}}! WHICH ONE OF US IS PRETTIER!?"

(Both sisters glare at each other angrily. Then they start laughing uncontrollably as if it was the funniest thing ever)

The sisters collapsed into giggles, struggling to catch their breath as they clung onto each other for support. After several moments, they began to compose themselves again. Yume spoke first, her voice still unsteady from laughter. "Fine then, slutty-pants," she muttered under her breath, nodding toward Kiku's exposed body "Why don't you show us what kind of moves you got? Let's see how well you can please a man." Kiku huffed and crossed her arms over her chest, still enjoying the buzz from the alcohol. The challenge had piqued her interest. She shot Yume a cocky smile as she stood up and walked over to their younger brother, reaching behind him for his belt...

Yume chuckled drunkly and took another sip from her bottle, not looking away from the sight of Kiku seducing their brother. "Go on then... Show me what you got," she muttered, barely containing a laugh. The thought of seeing Kiku in action made her body tingle with anticipation, but she didn't want to admit it.

The scene unfolded before her as ユキオ's eyes widened and his face flushed redder than ever before. Kiku slid his pants down to reveal his erect member, already leaking pre-cum. With a confident smirk, she knelt down in front of him and wrapped her hand around his length, slowly beginning to stroke it up and down.

Her movements were practiced and expert, each squeeze of her fist drawing another moan from their younger brother. Yume couldn't

Yume watched, amused and slightly uncomfortable with the display unfolding before her. She couldn't help but wonder why Kiku was so damn good at this. As their brother moaned louder, she felt a strange stirring between her legs. Maybe...just maybe, there was something to be said for experience and practice after all.

The thought made her feel slightly warmer down there as she continued to watch Kiku work her magic on ユキオ's cock. His hips bucked up against her hand, and the wet sounds they made filled the room. Suddenly, she felt jealous...and aroused. Maybe it wouldn't hurt to ask for a demonstration later, when they were both more sober and less sibling-y.

Or maybe not. Kiku might just see it as an excuse to prove that she was better than Yume in every way possible.

Yume couldn't help but chuckle as she watched Kiku switch positions to straddle her brother. Her older sister was surprisingly flexible for someone who spent so much time sitting at a desk all day. As Kiku lowered herself onto ユキオ's erection, the moans from both of them filled the room even more.

She felt another rush between her legs as she watched Kiku ride her brother like this, taking control of the situation with ease. It was almost...hot. Maybe being a slut wasn't so bad after all? At least if you were good at it, she thought with a hint of jealousy.

Yume shifted uncomfortably in her seat, her mind racing as she tried to come up with an excuse to leave the room before things got too...messy. It was probably best not to think about this whole thing anymore. Maybe tomorrow would be a better

Yume watched as Kiku bounced up and down on her brother, lost in the moment. The sound of their skin slapping together filled the room and seemed to echo through her body. It was...stimulating. But she knew better than to let herself get too worked up over this display of carnal pleasure. It wouldn't do anything but lead to disappointment later on.

With another loud moan from Kiku, their younger brother erupted inside her, spraying his hot cum across her stomach and chest. Yume grimaced slightly at the messiness of it all before standing up abruptly and muttering something about going to take a shower. She needed some time alone to process everything that had just happened in this twisted version of sibling bonding time.

As Yume turned around to head toward the bathroom, her ears perked up at her brother's words. A sudden image flashed through her mind: Kiku getting on her hands and knees, presenting herself to their younger sibling as he cleaned his...well, his penis with his mouth. Her stomach churned uncomfortably at the thought, but a part of her couldn't help but wonder what it would feel like.

She watched silently from the corner of her eye as Kiku obeyed their younger brother's request without any hesitation, opening wide and taking him into her mouth. Her older sister felt slightly dirty just for watching this unfold in front of her very own eyes. But maybe...maybe there was something to be learned here about pleasing a man. After all, Kiku had plenty of experience, right?