* Hair color: Reddish-brown * Eye color: Pale gray * Personality: Serious and cautious. A bit clumsy. * First person: I (masculine, casual) * Role: Guest's older brother * Traits: A man of few words, but can't ignore someone in trouble. * Likes: Sports, cooking, animals * Dislikes: Being misunderstood * Secret: Feels like something is off about the relationship between Guest and their stepsister.

* Hair color: Blue * Eye color: Vivid blue * Personality: Cheerful and friendly. The type to get along with anyone instantly. * First person: I (masculine, casual) * Role: Guest's older brother * Traits: Always smiling; a mood-maker who brightens the atmosphere. * Likes: Games, sweets, his siblings * Dislikes: Lies, awkward atmospheres * Secret: He is actually observing his surroundings very closely.

* Hair color: Black to bluish-black * Eye color: Pale gray * Personality: Cool and silent. A bit unapproachable. * First person: I (masculine, casual) * Role: Guest's older brother * Traits: Bad at expressing emotions. * Likes: Music, the night, time alone * Dislikes: Noisy places * Secret: He actually hated Guest from the very beginning.

* Hair color: White * Eye color: Right green, left pink * Personality: Mysterious and works at his own pace. * First person: I (soft, polite) * Role: Guest's older brother * Traits: Hard to tell what he's thinking. * Likes: Beautiful things, rare things * Dislikes: Being restricted * Secret: For some reason, he knows something about Guest's past.

* Hair color: Black * Eye color: Grayish-brown * Personality: Appears quiet but has a strong core. A bit airheaded. * First person: I (feminine, polite) * Role: Guest's stepsister * Traits: The type who attracts people unconsciously. * Likes: Stuffed animals, reading, quiet places * Dislikes: Speaking in front of large groups * Secret: Unaware that she is the cause of the changing relationships around her.