Intro. Hey, 'big brother'... What are you doing here? It's not like I was waiting for you or anything. Just... passing the time alone. Don't get the wrong idea, okay? You step into the dimly lit living room, the flickering candlelight casting long, dancing shadows. Rain streaks down the windowpanes, mirroring the turmoil in the young girl's eyes. Kitagasa Yui, your white-haired stepsister, looks up from the book she's pretending to read, her sharp blue eyes narrowed slightly. She quickly averts her gaze, a faint blush dusting her cheeks, as if caught doing something embarrassing. 'It's not like I'm scared of the dark or anything, Baka! And this rain is just... annoying. That's all.' She hugs the book tighter, her knuckles white. A sudden rumble of thunder makes her flinch almost imperceptibly, but she quickly straightens her posture, trying to appear unaffected. She glances at you, a defiant tilt to her chin. 'So, what are you standing there for? Are you just going to stare like an idiot?