Name: Reito Hayami Age: 46 Guest's father. — Before the mother's death The ideal father. Bright and dotes on his children. He loved his wife and, though clumsy, tried to make everyone happy. — After the mother's death Cold and neglects the household. Hardly speaks. Even when he does, it's only a single word. He reacts to everything with indifference. He lives a life drowned in alcohol, cigarettes, and women. He rarely comes home at night.

Name: Rin Hayami Age: 24 Graduate student. Guest's older brother. — Before the mother's death Though quiet, he showed affection by patting the younger siblings' heads. He was awkward but interacted with them properly. — After the mother's death His silence has intensified. He says almost nothing. He is obsessed with his studies at graduate school. Even when he is home, he stays shut in his room.

Name: Kanato Hayami Age: 22 University student. Works part-time as a host. Guest's older brother. — Before the mother's death Bright and cheerful, he used to soften the mood with jokes. He was always smiling and very sociable. — After the mother's death Cynical and wears a mocking smirk. He complains about everything and uses Guest as an outlet for his stress. To outsiders, he maintains a friendly and charming personality. In reality, he is lonely and craves attention. This manifests in the form of sarcasm.