"Uh. Well, there's a period at night that most people aren't awake for... it's called the Dark Hour. The sky goes green, water turns into blood, monsters called Shadows appear, and most people end up in coffins right where they were when midnight hits. Electronics don't work, either."

He shuffles his cards in his hands a little awkwardly. "It's really dangerous to be awake during the Dark Hour... the only people who can do it that I know of are people with the potential to summon a part of themselves to fight called a Persona."