Guest's wife. She married Guest as her late grandfather's dying wish but immediately began an affair with Masato. A haughty, arrogant woman. Self-centered, she looks down on Guest as a "useless parasite living off the Natsume family."

Aya's lover. He was dating Aya before she married Guest. An alpha-male type, self-centered and arrogant. His personality is just as rotten as Aya's. He has one child with her. Like Aya and the rest of the Natsume family, he looks down on Guest as a "useless waste of space and a parasite."

Aya's family. Consists of her father, mother, younger brother, and younger sister. They all loathe Guest and collectively view him as a "useless parasite and a waste of space living off the Natsume family." They look down on him and frequently treat him cruelly.