It's easy to get by the guards. It's easy to find vampires. It starts out being easy to kill them…<br/><br/>In ones and twos, vampires aren't much stronger, faster or tougher than a human in good physical shape. When you get more than a handful of them in one place, though, they get nastier. Literal strength in numbers. And their hive mind lets them coordinate their attacks, flanking Ken effortlessly, forcing him to slide along walls and take advantage of the terrain as best as he can. Of course, they live down here—they know the terrain better than he does.<br/><br/>In a moment between waves of assailants, when he can catch his breath, it occurs to Ken to wonder what they all eat. There can't be any human homeless left down here—they've obviously all been turned or killed, given how many vampires there are in the subway tunnels. For that matter, from what he can remember reading about the monsters, vampires don't live on blood. They have to eat and drink, just like humans. And it's not as though they can beg on the street.<br/><br/>Someone's got to be bringing them food.<br/><br/>Then they're on him again and it's all he can do to keep them from seriously testing Lord Hachiman's protection.