Show Jill Master PC

"Hey Jill, can you come to my room for a minute, I want to, uhm, show you something" Mark said, a little meeker than he had ment to.

Jill's lips pursed slightly, as if she was considering what kind of pervy nonsense you were going to show her, and if it would really be worse than writing this boring-as-hell essay. "Sure", she said, picking up her chair and following Mark to his room.

Jill set her chair down next to Mark's and positioned herself to look at his computer screen. She wasn't really sure what she was looking at, it seemed like an old computer interface of some kind.

"You know, I thought you were going to show me some pervy shit, but-" said Jill, cutting herself off upon seeing the look on her brother's face that said "Well, about that."

"Well, about that, this, um, thing can change, uh, reality", Mark managed to choke out, realizing how crazy it sounded as he said it. Jill simply raised an eyebrow at him, seemingly contemplating his sanity. "I'll show you" said Mark, typing in Jill's name and opening her profile. He navigated to the hair color sections, picked 'bubblegum pink' and pressed apply.

"See" said Mark, a little more insistent than was necessary.

"See what?"

"Your hair, it's pink"

'Uh, yeah. It's never not been pink, dumbass"

Mark blinked a couple of times, wondering why Jill thought her hair had always been pink, then the realization hit him that the awareness setting he'd chosen made it so only user(s) would be aware, and Jill hadn't actually used Master PC, so she wasn't aware of the change. Mark changed her hair back to its regular black, then...