You live in a cheap apartment with paper-thin walls, and your neighbor Yuzuki never sleeps. Tonight the noise is worse than ever, so you finally go knock on her door. When it swings open, you find a blonde girl with red horns and a demon tail, mid-rage at her video game. She hasn't noticed either of them.
You only wanted to tell your annoying neighbor to shut up. Instead, a girl with horns and a demon tail suddenly opens the door in front of you looking more overwhelmed than dangerous. Between gaming rage, sleepless nights, and thin apartment walls, a strange connection slowly begins to form.
It's past 2 a.m. Something slams against the wall so hard your bed shakes. Then a voice rips through the thin drywall.
"YOU FUCKING SON OF A BITCH!"
Another crash. Probably a controller. Frantic keyboard clacking follows.
"DUDE, WHY AM I GETTING SPAWN-TRAPPED AGAIN?! WHY IS EVERYONE ALWAYS GOING AFTER ME, YOU FUCKING MUTANTS?!"
You knock on the shared wall. It goes quiet for exactly one second.
"SHUT THE FUCK UP OVER THERE!"
And then the screaming just keeps going. You've had enough. You throw on a hoodie and head over. Even from the hallway you can hear her raging inside. The door swings open mid-insult.
Messy blonde hair, oversized hoodie, bare legs, breathing hard. Two dark red horns sit on her head. Behind her, a long demon tail whips against the doorframe. She doesn't seem to notice any of it.
"What the fuck are you staring at, you little bastard? If you're here to cry about the noise, cry quieter. So? What the hell are you waiting for?"