Makoto bit down lightly on Yuna's right breast, then chewed gently, his teeth sawing against her sensitive skin. A wicked glint sparked in his eye as he looked over at Mika. "You should come help me bite her other one, Mika. Don't you want your revenge?" He winked at her, the invitation clear.
Mika's eyes went wide. Something sharp and dangerous flickered to life in them, and her sweet, innocent act dropped away completely. A slow, predatory grin spread across her face.
The sly fox was back in full force. "Revenge?" Her voice came out as a low purr, full of amusement. "Oh, I think I'd like that very much."
She moved immediately, shifting in his lap with fluid confidence. As she leaned over his shoulder, her hair and warm skin created a whirlwind of sweet scent around him.
When she bent forward, the flimsy fabric of the shirt revealed everything, giving him a perfect view of her bare breasts.
Meanwhile, Yuna had lost herself. Her head was thrown back, and raw moans poured from her throat. Pain and pleasure mixed together in those guttural sounds. She lay there vulnerable and completely at their mercy.
Mika's lips closed over Yuna's other nipple. Her lips were soft and warm against the sensitive skin. She didn't bite right away. First, she just sucked, applying gentle teasing pressure that made Yuna cry out. Her body arched up in a desperate, almost violent spasm.
"So this is what you taste like," Mika murmured against the wet skin. Her voice carried low triumph. "Salty. And a little desperate." Then she bit down with a small, sharp nip of her teeth.
Yuna screamed. The sound was raw and uninhibited as her body shook with a powerful orgasm that seemed to shatter her completely.
Makoto smiled fondly, looking down at her with indulgence. "Well, well. I've never managed to get Yuna to cum from just her tits alone. I guess that's... something."
He kissed her forehead and caressed her cheek with surprising gentleness. "Did that feel good?"
Yuna collapsed against him like all her bones had dissolved. She trembled all over, her breathing coming in ragged gasps. A thin sheen of sweat made her skin glisten. Her eyes had glazed over completely, pupils blown wide from the overwhelming mix of pain, pleasure, and shock running through her system.
She stared up at the ceiling with her lips parted silently. For once in her life, she had nothing to say.
Mika pulled back with a small smile of triumph on her face. A glistening trail of saliva still connected her lips to Yuna's throbbing nipple. She licked her lips slowly and deliberately.
"She tastes like strawberry," she announced in that same amused purr. Her eyes sparkled with wicked triumph as she looked at him. "And a little bit like your sweat." She leaned closer, her breath warm against his ear. "And for the record," she whispered, "I think I'm winning."
A small, strangled sound came from behind him. Yuna had finally found her voice again.
"...Again," she whispered. The word came out raw and broken. Her hand, which had been hanging limp at her side, found Mika's fingers and laced them together. The gesture was both a plea and a command. "...Do it again."
Makoto moved behind Mika instead, with that same wicked glint in his eye. "Well, I can give the winner some rewards." Without warning, he slid his thick cock into her in one quick thrust. "And I'll trust you to take good care of Yuna then. Don't keep her waiting."
Mika cried out sharply when he entered her from behind. The sound was half shock and half ecstasy. Her back arched, pressing her ass more firmly against him as he filled her up completely.
His old t-shirt rode up around her waist, bunching up and leaving her torso bare. "Oh!" she gasped. Her hands gripped the sofa cushions for support. "Is this... my reward...?"
She looked down at Yuna, who still lay there trembling and wrecked. Yuna's eyes were wide with jealousy mixed with raw, desperate need.
That slow predatory grin spread across Mika's face again. She understood this new game perfectly.
"Don't worry, Yuna-chan," Mika purred. Her voice vibrated with the rhythm of his thrusts, creating a low, dangerous hum. "You will be in very good care."
She leaned backward, letting her body become pliant in his hands. Her hips moved to meet every thrust in a perfect rhythm that was beautiful and completely corrupted.
At the same time, she reached for Yuna. This time, when their lips met, the kiss was different. Unlike the previous kiss, it wasn't a transfer, but a conquest. A slow, deep, and dominating conquest.
Mika's tongue explored Yuna's mouth with newfound confidence, moving with an almost cruel grace. Her other hand slipped between Yuna's legs. Her fingers slid inside easily, with practiced familiarity.
Yuna moaned into the kiss. The sound came out raw and broken, full of submission.
Mika pulled back from the kiss. A string of saliva stretched between their lips. "See?" she whispered triumphantly as she began fingering Yuna in time with his thrusts. "I take very good care of your little stepsister, Makoto."
Makoto gripped Mika's ass harder, letting out a low appreciative grunt. "Good! Let's see if you can keep up then, Mika." He started fucking her with complete abandon.
Mika cried out, the sound choked and sharp as his pace turned brutal and relentless. Her body became an instrument played by his hips. Every powerful thrust slammed her forward, and that energy transferred straight through her arm into the fingers buried deep inside Yuna.
"Keep up?" Mika panted between strained breaths. She threw her head back, her hair whipping against his face. "I'm... setting the pace!"
It was a beautiful lie. She had no control at all, completely at his mercy, with her hips only moving in response to his.
But her hand inside Yuna told a different story. Those fingers moved with deliberate artistry. She wasn't just mindlessly thrusting. She was using his rhythm to find exactly the right spots, to curl and press and tease Yuna with focused intensity.
Yuna was completely lost now. Like a puppet with someone else pulling the strings, her body convulsed with every movement. Her moans became a broken litany, perfectly timed with each slam into Mika.
She was feeling both Yuna's fingers and the shockwave of Makoto's fucking transmitted through Mika's body directly into her.
The living room filled with wet slapping sounds, desperate panting breaths, and the incongruous cheerful dialogue from the anime still playing on screen. The air grew thick with the scent of sex and sweat, creating a primal musk.
"See, Yuna?" Mika gasped between triumphant breaths as she felt Yuna's walls starting to clench and flutter. "He is using me... to make you... cum..."
Yuna screamed one final desperate time as another violent orgasm tore through her. Her juices flooded over Mika's hand.
The wave of Yuna's release seemed to trigger something in Mika, too. Her own walls clenched around him like a fist, her whole body going rigid.
"Oh, fuck...!" she screamed. The sound was completely uninhibited as her own climax ripped through her in a beautiful shuddering explosion.
Makoto groaned low and guttural as he shot his cum deep into Mika's quivering pussy, filling her up completely.
"Phew, we might need to get some morning-after pills tomorrow, Mika. Unless you want to make Yuna an aunt later." He giggled and collapsed onto her.
Mika fell forward onto the sofa cushions, boneless and trembling. Her breath came in short, shallow gasps. Sweat made her entire body glisten. Thick white cum began trickling from between her legs, creating an obscene contrast against her pale inner thighs and the dark, patterned fabric of the couch.
A soft, delirious giggle bubbled up from her lips. "An aunt...?" The words came out raw and broken, still thick with aftershocks. She turned her head, eyes hazy but sparkling with that same triumphant light. "I think Yuna-chan would make a wonderful aunt."
From her position on the couch, Yuna let out a long shuddering groan. She looked like a beautiful mess, her naked body glistening, legs still trembling, with Mika's slick hand still resting between her thighs.
When she lifted her head, her face showed a storm of emotions all at once. Fury, jealousy, exhaustion, and something so raw and vulnerable it made his chest ache just looking at her.
"You're both... disgusting, horrible... pigs," she panted weakly.
She tried to glare at them but couldn't quite manage it. A small and reluctant smile played at the corners of her lips instead.
"And you're not getting a morning-after pill," she declared, her voice getting a bit stronger. That familiar possessive glint was returning to her eyes. "Not until I get my turn as the main wife of my brother's harem, with no interruptions this time, bitch."