Matt's been leaning back against the wall, simply listening to the exchange.  "I can tell you a little about it, Jessica.  There are multiple worlds.  One of them is what you'd call the "black" one.  It's a twisted but mostly one-to-one reflection of our world.  So, we are in Tokyo, and right across the barrier between worlds is Black Tokyo."  Matt is sitting completely still, staring at the ceiling, showing no more expression than if he were reciting a recipe, or a series of dates in history class.  "It's inhabited by people, oftentimes people similar to the ones here.  Some will have an evil twin over there, even.  Others don't.  The environment is usually different enough, decayed or dismal, that you can tell you've made the transition.  It's also home to all manner of oni - many of them predatory.  Goroi and his, ahhh,<em>appetites</em>, I should say, would be considered fairly typical."<br/><br/>"It's a terrible place and, as you can imagine, they like to come across to our world to prey on the innocent and the corrupt alike.  Our world has very few defense mechanisms against them - interdimensional kidnappings are rather beyond the competence of any earthly police force I'm aware of.  And people don't know what to watch for, so they're vulnerable."  He stretches his arms out and laces his fingers behind his head, his eyes closed as he recites the ancient formula of their situation, repeated by generations of high school students.  He wonders what the monsters did before there were high schools.  "That's what we're seeing right now.  Someone rearranged the ley lines, using the shrines you visited, to make them cross over and weaken the barrier between worlds, right on top of our school.  I'm presuming that was intentional, because the Oni are sure using the opportunity to do a few snatch-and-grabs."<br/><br/>"We could easily fix the shrines and the barrier would close back up, at least at the school, but we'd probably have to forget about rescuing anyone already taken.  Masato and I consider that plan unacceptable at the current time."