In this chapter, we learn that the Parasites can take the head of a person and control their body. They can even transform into weapons and eat people. The only problem is that they can't take the person's head, so they don't attack anyone. The Parasites also have the ability to sense the smell of the person they're attacking. They're able to smell the difference between a human and a monster, and they can tell when a person is coming close to them. This is the only thing that keeps the two of them together, and it's the only reason they've ever been together. The next thing we know, the two are in the train station.