The new routine in the Yuuki household was sweet, domestic, and intensely complicated. The quiet moments they shared were no longer just sibling bonding; they were a continuation of the secret, thrilling intimacy established in Mikan's room.
Mikan was no longer cold. Rito, true to his word, was overwhelming her with attention. He would kiss her forehead repeatedly, press his lips possessively to her neck, and make her sit on his lap while they watched TV. It was all intensely sexual, yet often performed with Rito's signature blushing sweetness, and Mikan was melting under the relentless affection, her walls dissolving.
On this particular evening, Rito was helping her clear the dinner table.
"You really don't have to do the dishes, Rito." Mikan said, handing him a stack of plates. She was blushing, enjoying the warmth of his shoulder brushing hers.
Rito took the plates with one hand. His other arm wrapped around her waist, his hand sliding down to cup her soft, small ass beneath her apron. He squeezed it firmly, pulling her hips flush against his.
"I know," Rito murmured, resting his chin on her shoulder. "But I promised to spoil you. And spoiling you means helping you... and making sure you know how much I love every part of you, Mikan."
Mikan leaned back into the solid muscle of his chest, a heavy, contented sigh escaping her.
"You're a menace…" she whispered, her voice husky, enjoying the possessive squeeze.
BAM!
The front door burst open downstairs.
"RITO-KUN! I'M HOME!"
The sound of high-energy, confident heels clicked rapidly across the tatami.
"Run!" Rito sighed, pulling away. "I guess her recording session went well."
"She's full of energy." Mikan observed, a flicker of the old jealousy returning as she saw Rito's attention immediately snapped away.
Run burst into the kitchen, looking radiant. She was in a stylish, expensive leather jacket over a short mini-dress, looking every inch the Galactic Idol. She spotted Rito and threw her arms around him, spinning him around.
"Rito-kun! I finished the single! It went triple platinum on Xylos! I get a reward, right?!"
"That's great, Run." Rito said, laughing as he put her down.
Run, high on adrenaline and pheromones, barely acknowledged Mikan, though she was standing right there.
"Good evening, imouto-chan! Tell Mikan-chan to make you a sandwich, Rito, because you won't need dinner again tonight!" Run declared, grabbing Rito's hand.
Mikan's face tightened. The sweet bubble of their doting was gone, replaced instantly by the overwhelming reality of the harem.
"Run, wait," Rito started. "Mikan and I were just finishing up the—"
Run didn't listen. She tugged Rito's hand, pulling him toward the stairs.
"I need you now, Rito-kun! The Director said I was amazing, but I told him I wouldn't have the stamina without my handsome Manager-husband! Tonight is for Wife Number Two!"
"I'll be down later, Mikan! We're just going to... talk!" Rito called back, his face flushing with guilt as Run successfully dragged him out of the kitchen and up the stairs.
Mikan stood alone at the kitchen sink, listening to the heavy thump as Rito's bedroom door closed upstairs.
She dried her hands. She knew what "talking" meant. It meant intense, passionate lovemaking, complete with the glowing Seal. The sounds would be muffled, but she knew the activity.
She walked slowly up the stairs. She didn't want to interrupt. But the sheer need, the intense, agonizing curiosity of watching what she craved, was too much.
She stopped outside Rito's room. The door was closed, but the sounds were already starting. The bed creaking. Run's muffled moans. Rito's rough voice.
She hesitated. Then, her jealousy, her addiction, and her desire to understand her own place in Rito's heart took over.
Mikan reached out and gently pushed the door a sliver, just enough to peek inside.
…
Mikan stood alone at the kitchen sink. The house was no longer quiet. From upstairs, the sounds of Run dragging Rito into his room, a mix of laughter, high-energy demands, and the decisive thump of his bedroom door closing, echoed through the hallway.
Mikan started stacking plates, her movements jerky and aggressive.
Clink. Clatter.
The injustice of the situation, she had just been showered with domestic affection, but now the real, primal love was reserved for the wife, fueled her resentment.
But it was the addiction that won. The deep, physical craving for his scent and his presence, which she had only just satisfied on the sofa, was already pulling her upstairs.
She walked slowly up the stairs. She told herself she was going to her own room. She told herself she was going to bed.
She stopped outside Rito's door.
Run's voice, high and ecstatic, cut through the wood, slightly muffled but clear: "Rito-kun, faster! I need your energy! Make my tummy glow! I love being filled by you!"
The sounds of impact followed immediately.
Thwap-thwap-THWAP!
Mikan gasped. She reached out and gently pushed the door a sliver.
The room was bathed in the soft, intimate glow of the bedside lamp. Rito and Run were engaged in fierce, passionate sex. The air was already thick with the scent of their heated skin and Rito's potent musk.
Mikan's eyes locked onto the Golden Heart Seal on Run's lower abdomen. It pulsed like a star, growing brighter with every deep, powerful drive Rito executed.
The rhythm was relentless. Rito was gripping Run's hips, driving into her with a strength that made the bed frame groan and thump against the wall.
SCHLICK-SQUELCH!THWAP-THWAP-BAM!
The wet, slapping sounds were constant, punctuated by Run's cries.
"Ahhh! Rito-kun! Deeper! Nngh! Right there! Yes!"
Mikan felt a deep, unfamiliar clenching in her own abdomen. She realized she was pushing her hips forward, mimicking the action, drawn in by the pure, rhythmic sound of their passion. She saw Run's face, no longer the friendly girl who shared sandwiches, but a woman lost in ecstasy, demanding pleasure. She saw Rito's face, red, sweat-soaked, but completely focused, giving his wife everything he had.
She stood there, hidden in the shadows, witnessing the raw, primal reality of her new life. She felt a wave of intense arousal and competitive need. She pressed her hand hard against herself, through her pajamas, trying to stop the wave of need that was building.
'I want that…' Mikan thought, her eyes burning. 'I want that mark. I want that connection. I want him to look at me like that.'
She slowly, silently pulled the door shut, sinking down onto the hallway carpet. She sat there, hugging her knees, her body trembling with a mixture of shame, realization, and fierce, unadulterated need.
She knew what she had to do. The slow, seductive path wasn't enough. She needed to be direct. She needed the Seal now.
…
Mikan sat on the cold hallway floor until the aggressive rhythm inside the room finally slowed. A final, lingering squelch followed by a slow groan signalled the end of the round.
She stood up, her body trembling slightly. She knew what was coming next: Run's high-energy departure.
A few minutes later, the door slid open.
Run stepped out first. She looked utterly spent, her hair damp, her face flushed and relaxed. She was wearing her short mini-dress again, though it was slightly rumpled and seemed to cling to her skin.
She spotted Mikan in the dim light of the hall.
"Imouto-chan!" Run cheered, completely oblivious to Mikan's internal turmoil. "I'm sorry, I forgot to buy you that juice!"
Run walked up to Mikan, grabbed her shoulders, and pressed a messy, loud kiss to her cheek. Her lips were swollen and glistening, still bearing the faint scent of Rito's musk and recent release.
"Rito-kun was incredible!" Run whispered conspiratorially, her breath hot on Mikan's ear. "I'll see you both later! I love you! Bye!"
Run skipped down the stairs, full of post-coital energy, leaving Mikan frozen, the wet mark of the alien's kiss on her face.
Mikan wiped the spot with the back of her hand. Her mind was numb to the taboo. All that mattered was the intense need the scene had awakened.
She pushed Rito's door open and stepped inside.
Rito was sitting on the edge of the futon, pulling on a clean t-shirt. He was panting slightly, his skin slick with sweat, his eyes still half-lidded from the intensity of the climax. He saw Mikan and winced, already preparing his apology for the noise.
"Mikan, I'm sorry, I know that was loud, but I—"
"Shut up, Onii-chan," Mikan interrupted.
Her voice was flat, devoid of its usual jealousy or sarcasm. She walked into the center of the room, closed the door firmly, and locked it. The click of the latch was loud and final.
Rito stared at her. He saw the shift in her eyes, the transition from a jealous sister to a girl on a mission.
"I'm not going to be mad about the noise," Mikan stated. "I don't care about the noise."
She walked over to him, stopping right between his spread knees. She reached out, her fingers finding his waist, and pulled him flush against her.
She looked up at him, her eyes burning with the image of Run's glowing abdomen.
"I watched," Mikan whispered, her voice husky. "I watched the Seal glowing. I watched how happy she was when you filled her."
She gripped the waistband of his shorts, her thumbs digging into his skin.
"I don't want to just be 'safe' anymore, Rito. I don't want to just be spoiled. I don't want to just be loved."
Her face was centimeters from his.
"I want to be filled," she demanded, her voice shaking with passion. "I want to be your wife too. I want that mark on me. Do it to me now, Onii-chan."
*****
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