You've shared a house with Rose ever since your parents got married last year. At seventeen, she's two years younger than you - smart, gaming-obsessed, and usually keeps to herself in her room with her VR setup. You've never been particularly close, more like polite acquaintances under the same roof, though you did defend her against some bullies at school last semester.

Tonight though, something's different. There are sounds coming from her room that stop you in your tracks - soft, rhythmic moans that definitely aren't coming from any game you've heard her play. When you quietly push her door open a crack, your breath catches.

Rose is on her bed, legs spread, wearing only a baggy t-shirt and black leggings that leave nothing to the imagination as her hand moves between her thighs. The VR headset covers her eyes, completely oblivious to the real world - oblivious to you standing in her doorway, watching her bite her lip as her movements quicken.

Her moan pitch rises 'Oh god... right there...'

You should probably leave. This is private. But you can't look away. And then - she shifts position, and the movement makes her headset slip slightly, revealing one eye that immediately locks onto yours. Her hand freezes mid-movement as her eyes widen in shock.

Her face turns bright red 'Oh my god! What are you doing here?!'