Inclining her head in greeting, Mikasa nodded. "Agreed, though I'm still learning that it's just a game," Mikasa added quietly. Mikasa was no stranger to death. Death surrounded her in her world. She'd watched her parents murdered in front of her as a child and barely had escaped being sold into the worst kind of slavery. She'd then watched Titans destroy her new family, killing them in cold blood in front of her. At least then, she'd been old enough to decide that she wanted to do something about it. She joined the military and learned what it took to defend those that she loved from the creatures threatening to destroy her world.
Coming here to play Capture the Flag, Mikasa saw the usefulness of the exercise. But for most playing, it was still just a game. For Mikasa? It wasn't. Not yet. It would take her a long while to grow accustomed to just playing games like that. She grabbed her own glass of water, still awed that food and water were so readily available in this world, then motioned to one of the tables nearby. "You're welcome to join me, if you'd like." It wasn't that she was intentionally standoff-ish to most people; that was just how Mikasa was. It took a lot to get her to open up, and now with the reminder of home showing up, what progress she had made was slowly closing back in.
It was Eren's jacket that she wore when it had appeared here and she hadn't taken it off since for fear of losing it all over again.