"No, we don't have anything like that." He can't even think up an approximation for this one.

"What... um, then vampires are way more than allergic to sunlight," Ryoji says, scratching his head, "They will die if they're out in it and can't get somewhere dark. I'm pretty sure that's the only straightforward way they die." He's kind of getting the impression they might be talking about something different, but that doesn't make any sense. ...Then again, her home apparently has elves. And... orc things.