S1, E1: Kio Kakazu finds a cat-like alien sitting at the buffet table. The alien introduces herself as Eris, and the two have a short conversation before Kio accidentally drinks beer and passes out. The next morning, Kio wakes up with a hangover and finds Eris sleeping half-naked next to him in bed. Kio's startled cry wakes her up, and she heals his hangover with a handheld device. Manami Kinjō and Maki Itokazu then visit Kio. After discovering that Eris is an alien, they both abruptly leave without saying why. It is later revealed that Manami is being recruited to become part of the CIA, Aoi is a Momiji for the Immigration Bureau of Japan, and Itokazu is the leader of an organization of SF fans called "Beautiful Contact", and they are all given orders to eliminate Eris.