[ Marcos knows they've amassed a few magical objects, but he didn't feel qualified to weigh in on them. Still doesn't. Holding onto them at all seems risky enough to him, but he feels like he owes it to Kaneki to make sure he handles this. ]

Thanks for the heads up. [ Unknown, but he expects they'd do something. ] Have you heard of them reacting to each other before?

I'm mostly worried it might signal the wrong kind of attention from the undead. Especially since it's the only thing I found that he'd left behind.