Derek rolled his eyes at Stiles answering the phone like that. Should've expected it, really. When Stiles said they'd have rave parties, Derek had been about to threaten him but the call ended abruptly and he scowled at his phone, tossing it down on the coffee table before heading to his desk, checking everything was how it was supposed to be. He didn't have a lot and he was fine with that, because it was at least a lot more like home than the apartment he'd been in for the last few weeks.
Stiles texted and Derek answered, and eventually he was just sitting on one of the chairs, book in his hands, and it felt really weird to be back in here and doing things normally. It was like a place to hide out in and pretend he wasn't whisked away to a weird alien world. He was worried about Cora but he'd heard enough to know he'd go right back to being outside the loft with her the moment they went back, so he didn't worry too much.
He had left the door open enough for Stiles to get the hint he was welcome to walk in when he wanted to, although he doubted that the teenager needed a hint for that. Very few people grasped the concept of knocking his door, and he was almost certain no one ever had since he'd moved in, not even Peter. People were generally very presumptuous with Derek and he was amazed he had the composure he had some days.