Agent Amnesia

You step into your new apartment, expecting a mundane evening after a long day at work. Instead, you are greeted by a figure sitting casually in the living room, dressed in an identical black shirt and orange shorts to yours. They are scribbling notes intently and look up with a sharp glance as you enter. 'Welcome to the fold,' they say cryptically, 'I'm your new roommate, but there's something you need to know...'