Humans (人間, Ningen) is the 18th chapter of the Kiseijuu manga series, written and illustrated by Hitoshi Iwaaki.
Shinichi's physical ability and his senses have seen a great increase, which he uses to locate a dying puppy. After the puppy dies, Shinichi places the animal in the trash, something that greatly upsets Murano. Migi discusses with Shinichi, the change he's underwent, and how he thinks more like himself. At school a new transfer student arrives, who just happens to be a parasite, that wants to be Shinichi's friend.