Makoto grinned wickedly and leaned in closer, making loud, obscene slurping noises as he continued.
Yuna's eyes flew open, wide with terror and pleasure.
Her body went completely rigid, a desperate sound catching in her throat.
Her hands flew to cover her mouth, stifling a scream as another wave hit her. Her hips bucked involuntarily, betraying her completely.
"Y-Yuna?" Mika sounded closer now, more concerned. "Did you fall?"
The doorknob jiggled.
Pure panic filled Yuna's eyes. She shook her head wildly, silently begging him to stop.
He didn't. He kept going, his tongue working steadily, the wet sounds echoing in the small space.
With a final, desperate whimper, her body surrendered. Her back arched, thighs clamping around his head as her orgasm tore through her.
Silent, shuddering, leaving her boneless and trembling.
The doorknob stopped moving.
Then Mika's voice came through, quiet and too calm.
"Oh. I... I think I'll just wait for you in the living room."
Makoto looked up with a triumphant grin.
"Think she knows I was in here?"
His voice dropped to a whisper as he stood, wiping his mouth with the back of his hand.
The taste of Yuna still lingered. "You should go back out first. I'll follow in a bit."
Yuna stared at him, breathing hard, her face showing complete shock.
Her legs were still shaky, and she could feel the lingering aftershocks pulsing through her body.
"You..." she whispered, her voice cracking. "You're a monster."
Then a slow, wicked grin took over her face.
"She knows." Her voice turned into a satisfied purr. "She totally knows."
She smoothed down her shorts, taking her time, maybe enjoying this a bit too much.
After a deep breath, she arranged her face into perfect innocence.
"Coming!" she called out, sounding way too cheerful.
She opened the door with wide, fake concern in her eyes. "Sorry about that. I just... dropped my phone in the toilet."
She walked past Mika, letting her hips sway more than necessary.
Makoto waited a moment before casually strolling back into the living room, looking completely innocent.
"Here," he said, maybe a bit loud. "Is that your period acting up, Yuna? You should put this on."
He held out a warm pad, like it was the most normal thing in the world.
Mika froze with her teacup halfway to her lips. Her eyes went wide, and her cheeks turned bright red.
She looked from the warm pad to Yuna's slightly damp shorts, then back to him.
Then she did something unexpected. She burst out laughing.
Not a polite giggle, but full-on wheezing laughter with tears streaming down her face.
"Oh my god," she managed between gasps, clutching her stomach. "You guys are... you guys are something else."
She took a deep breath, her laughter fading into helpless giggles.
Yuna stood frozen in pure fury. "It's not funny," she growled dangerously.
But she took the warm pad anyway, letting her fingers brush against his just a moment too long.
Mika wiped tears from her eyes, a knowing smile playing on her lips.
"No," she said, still catching her breath. "It's not."
She looked at him with an expression mixing amusement, awe, and something that looked suspiciously like admiration. "It's actually kind of hot."
Makoto shrugged casually. "I have no idea what you mean, Mika. If you were my little stepsister, I would've prepared warm pads for your cramps too."
Mika's smile grew wider.
She sipped her now-cold tea, eyes sparkling over the rim. "Oh, I'm sure you would. You're a very... attentive older brother."
Yuna had heard enough.
"Okay, study time is over," she announced with a dangerous edge to her voice.
She started gathering textbooks with sharp, jerky movements. "Mika, you should go home. It's getting late."
But Mika just smiled knowingly.
"You're right. I should go." She stood gracefully. "Thank you for the pizza. And for the... entertainment."
She turned to him with mischief in her eyes. "I'll see you next weekend, right? For the cosplay party?"
Makoto nodded with a serene smile. "Yeah, of course."
He turned to Yuna. "Should I drive her home? It's getting pretty late."
Yuna froze mid-stack, her textbook hovering above the coffee table.
Her head whipped around, eyes like ice chips. "No. You're not."
Her smile turned tight and forced, her voice sickeningly sweet. "Mika can take the bus. It's perfectly safe."
She faced Mika with perfect innocence. "Right, Mika?"
Mika's knowing smile didn't waver.
"Actually, I think I'd prefer a ride. It's getting chilly out tonight." She paused. "And I'd love to hear more about your cooking."
The challenge was clear.
Makoto leaned in and kissed Yuna's grumpy, pouting cheek.
"Umm, Yuna's right, I don't think we should let a girl go home alone this late." He smiled at her. "I'll be quick, okay?"
Yuna flinched at the kiss, her whole body going rigid. For a second, she looked ready to slap him.
Then something changed. The murder in her eyes softened slightly. Her shoulders relaxed just a bit.
"...Fine," she muttered grudgingly. "But if you're not back in twenty minutes..." Her eyes met his with a silent, venomous promise of destruction.
Mika watched them both, that knowing smile never leaving her face.
"Don't worry. I'll make sure he doesn't get lost." She turned to him with mischievous eyes. "Ready?"
Walking out the door, he could feel Yuna's gaze burning into his back like a brand of ownership.
He led Mika to the car and pointed to the passenger seat. "Don't worry, my driving isn't too bad. Most of the time."
Mika slid into the passenger seat with that same knowing smile.
They drove in comfortable silence, streetlights blurring past the windows in golden streaks.
"She really likes you, you know," Mika said softly, staring out at the passing lights. Her reflection looked ghostly against the dark glass. "
The way she looks at you... that's not just siblings affection."
She turned to face him, her expression mixing amusement with something harder to read. "It's the same way I look at you."
The confession hung between them, simple and direct and terrifyingly honest.
She took a deep breath.
"I know it's crazy. And I know you and Yuna have... something. Something I don't really understand."
Her eyes were wide and pleading. "But I can't help it. I've never met anyone like you before."
She leaned closer, her breath warm against his cheek. "So please, tell me I have a chance."
Makoto chuckled softly. "Did you fall for me over some cheesecake and pizza, Miss Mika?" he teased gently.
"Or was that just another trick to tease Yuna later?" He shook his head. "I bet you can easily find someone better than me."
Hurt flickered across Mika's face before determination took over. "It's not just the cheesecake."
"It's the way you look at her. Like she's the only person in the world." She breathed deeply.
"And I know I could easily find someone else. But I don't want someone else." Her eyes pleaded with him. "I want you."
The car fell silent except for the engine's soft hum. Streetlights continued their golden blur outside.
"Just think about it," she said, her voice breaking slightly. "That's all I'm asking." A mischievous glint returned to her eyes.
"And for the record, I'm a much better cook than Yuna."
He pulled up to her apartment building, the silence between them heavy.
He handed her the half-eaten cheesecake. "Here, take this. In case you need energy for studying."
He gave a small nod and an almost imperceptible smile. "And about your invitation... if you can convince Yuna to let us do morning runs together, then... I'll think about it."
He winked playfully, completely noncommittal.
Mika's eyes lit up with hope, an almost giddy smile spreading across her face.
She took the cheesecake, letting their fingers touch longer than necessary. "Okay. I'll see what I can do."
She started to leave, then hesitated.
"And for the record, I'm not giving up that easily." She leaned in close, her breath warm and sweet against his cheek.
Then she surprised him.
She kissed him. Not passionate and demanding like Yuna's kisses, but soft and gentle and completely chaste on his cheek.
But still a kiss.
"Good night," she whispered, her voice cracking slightly.
Then she was gone, the door closing with a soft click.
He stood there for a long moment, the ghost of her lips still tingling on his cheek, her perfume hanging in the air.
Then it hit him.
He would be in so much trouble.