Not much background you have to know here - these two tend to act as though they hate each other, and they do have plenty of disagreements, but they've reached the point where they can have a decent conversation if needed.
Kazuo x Mitsuko
Prompt: My muse trying to calm and quiet yours.
"Kiriyama, open the fucking door!"
Mitsuko rattled the doorknob furiously for what felt like the hundredth time, to no avail. She kicked the door out of frustration. "Last warning before I break a window!" she shouted.
The door suddenly swung open, and Mitsuko jumped back to avoid being hit in the face. Kazuo Kiriyama glared down at her.
"What the fuck do you want, Souma?" he drawled.
Mitsuko's jaw dropped, and her eyes went to the bottle in his hand. "Are you drunk?"
He scowled at her. "I've had a couple."
"Move over," she hissed, shoving past him and through the doorway. She reached for the lightswitch — had he been in the dark all day? "What the hell is going on?"
"None of your business," he said, glaring at her threateningly.
Mitsuko's hand drifted subtly towards her back pocket. She'd only brought the knife as a precaution — she hadn't expected things to be this bad…
"Too bad," she said, trying to keep her voice even.
Kazuo suddenly hurled the bottle he'd been holding towards the wall. It shattered, and Mitsuko flinched.
"Get out," he spat.
Mitsuko stood her ground. "No. I'm staying right here until you decide to calm to the fuck down so you don't hurt yourself."
"I don't want you here," Kazuo insisted.
"And I don't want to be here, so let's try to do this quickly," Mitsuko said icily.
Kazuo continued to glare, but his eyes lost the violent look they'd had a moment ago. "You are one stubborn bitch, Souma."
"Count on it," she replied through clenched teeth. She gave him a piercing look. "Now… start talking."