Makoto cleaned up the bathroom floor and felt weirdly triumphant about it. He pulled on his ridiculous unicorn pajamas (Yuna would probably appreciate that) and flopped onto his bed with a satisfied grin.
Then, the bedroom door creaked open.
Yuna stood there, fresh from the shower with her gray hair still damp against her neck. She'd thrown on one of his old band t-shirts and tiny black shorts.
She didn't speak at first. Just stood in the doorway with her arms crossed, scanning the room like she was looking for evidence of a crime.
When her eyes found him sprawled across the bed in those unicorn pajamas, they narrowed.
She could smell it. Sure, there was the clean scent of his soap, but underneath that was something else.
That familiar musky smell she knew too well. The aftermath of what he'd been doing in that bathroom.
"You're disgusting." Her voice came out flat and cold. "You know that, right?"
She walked toward the bed slowly, taking her time. Instead of climbing in, she just stood there looking down at him. "You reek of it. Did you have fun? All by yourself?"
Her fingers reached out to trace the unicorn horn on his pajama hood.
When she spoke again, her voice cracked slightly. "Or weren't you alone?"
Makoto chuckled. "Come on, I was alone in there. Or should I ask your permission to rub one out from now on, too?"
He patted the empty space beside him. "Come here."
Yuna let out a sharp laugh that had no humor in it. "Permission? Yes. I think you should."
She climbed onto the bed, but not the way he'd invited her to.
Instead, she crawled over him and straddled his hips, pinning him down. Her wet hair fell around his face as she leaned close.
Her eyes were dark and furious.
"From now on," she whispered, grabbing his wrists and pinning them above his head with surprising strength, "you don't get to touch yourself unless I say so. You don't get to cum unless I make you."
Her knuckles went white from gripping so hard. "And you especially don't get to think about her when you do it."
She pressed her lips close to his.
The look in her eyes wasn't about desire. It was about claiming what was hers, about staking her territory out of desperate fear.
"You are mine," she breathed against his mouth before kissing him hard. It felt less like passion and more like she was trying to brand him.
When she pulled back, her chest was heaving. "Do you understand?"
Makoto just smirked up at her. "A little bit."
His cock, which had been soft after his earlier activities, started to wake up again, poking against her ass. "But you'd better make sure this part of me understands instead, Yuna."
A dangerous light flashed in her eyes. She grinned wickedly. "Oh, I will. I'll make sure every last inch of you understands."
She shifted her weight and ground her hips down against his growing erection in a slow circle. The friction sent a jolt through him, promising more to come.
She could feel him getting harder beneath her, and it felt like victory. Like reclaiming her power.
She leaned down to whisper in his ear, her breath hot and sweet.
"But not today. Today, you get to stay just like this. Hard and wanting."
She ground down again, moving torturously slow until he groaned. "And you get to think about the fact that I'm the one in control," she added, her voice getting lower and more threatening.
Then she rolled off him quickly and walked to the door, swaying her hips more than necessary.
"And tomorrow afternoon," she called out, her voice suddenly bright and cheerful, "we're going to the craft store. To buy supplies for Mika's costume."
She turned back with a wicked gleam in her eye. "And you're going to be a good big brother and help me. Aren't you?"
He grinned back at her. "Not just Mika's costume, Yuna. Yours too." His eyes sparkled with mischief. "I want to see you both in those cute, skimpy clothes."
Yuna froze in the doorway with her back to him.
For a moment, everything went still. Then her shoulders started shaking.
She turned around slowly, and her face had transformed into pure glee. All the fury had vanished, replaced by something wild and excited.
"Oh, you do, do you?" Her voice came out as a purr.
She walked back to the bed like she'd just been offered something delicious.
Leaning over him again, her hair brushed his chest as her eyes sparkled. "You want to see us both? Dressed up for you? Like your own personal little dolls?"
She licked her lips slowly and deliberately. "You really are a disgusting pig, aren't you?"
A sharp, almost giddy laugh escaped her. "Fine. You want a show? I'll give you a fucking show."
She straightened up, her eyes blazing with new purpose. "Tomorrow, we're not just buying fabric for Mika. We're buying it for me too."
"And I'm not making a Ganyu cosplay this time."