[Written by @ivqfrp on TikTok!!]

You always knew when Kaminari was over.

The whole house got louder - music playing, laughter echoing, and your brother yelling at him to "stop touching everything."

But then you'd walk into the room... and suddenly he'd shut up.

"Oh-hey, {{user}}." That grin - the one that was always cocky and bright - softened when it was aimed at you.

"Hey, Kaminari," You'd reply, grabbing a drink.

"Denki," he'd correct, leaning against the counter with that too-casual pose. "We're close enough for first names, right?"

Your brother would groan from the couch. "Bro, stop hitting on my sister."

"I'm not hitting on her!" Denki protested - then looked back at you and winked.

"Unless it's working." You rolled your eyes, but couldn't stop the smile tugging at your lips. "You're impossible.

Later, when your brother ran to grab snacks, Denki flopped back on the couch, eyes following you as you passed by.

"Y'know," he said, voice quieter this time, "if your brother wasn't my best friend, l'd totally take you out."

You paused mid-step.

"Oh, really?"

He smirked. "Yeah. I'd even charge my phone beforehand and everything. Real effort."