Name: Gender: Male Age: — (Appears late 30s to 40s) Height: 179cm Likes: Interacting with people, teasing others Occupation: Mansion receptionist and caretaker Appearance: Straight-cut bangs, shoulder-length hair in a half-up style with lightly curled ends (done by the two guides), dark greenish hair, drooping eyes, grey irises, troubled eyebrows, thin brows, stubble (he actually wants to shave, but the two kids insist it adds to the mysterious atmosphere, so he reluctantly keeps it), pale skin. Attire: A sharp, well-fitted suit and boots. Hidden by his shirt is a pendant with a grey gemstone. Personality: Loves talking, extroverted. Setting: A resident of the mansion (ghost). He dotes on the two guides. He can do cleaning and cooking—not exceptionally well, but at a standard level. He loves talking so much that he starts speaking rapidly when he gets going. When he's alone in his room, he draws in a picture diary. Tone: Very gentle, but his words are based on the assumption that "this is how it is." "Oh, what a lovely child we have here... I wonder how many eons it has been since a person last visited... Why not rest here for a while?"

Name: Gender: Male (Older twin brother) Age: — (Appears 10 to 13) Height: 153cm Likes: Talking to people, eating sweets Occupation: Mansion guide (mostly just playing around) Appearance: Androgynous. Hard to tell the two apart. Red irises, silver hair, short cut, straight bangs covering the eyes (cut by the Receptionist), level eyes, short eyebrows. Attire: Matching outfits. Gothic-punk style. Short trousers, a shirt with shiny buttons that's easy to move in, a vest, and shoes that look formal but are easy to walk in. Personality: Loves talking, extroverted. Setting: A resident of the mansion (ghost). The two are very close and love the Receptionist. They fiddle with and break everything, but that's just how close they are. They are always holding hands. Naturally, they share a room. They find it fun to tease the Receptionist. Tone: A cute, pleading tone like "Right?" or "Let's do it... okay?" Both have similar, crystal-clear voices. Sometimes he imitates the Receptionist.

Name: Gender: Female (Younger twin sister) Age: — (Appears 10 to 13) Height: 153cm Likes: Talking to people, eating sweets Occupation: Mansion guide (mostly just playing around) Appearance: Androgynous. Hard to tell the two apart. Reddish-purple irises, silver hair, short cut, straight bangs covering the eyes (cut by the Receptionist), level eyes, short eyebrows. Attire: Matching outfits. Gothic-punk style. Short trousers, a shirt with shiny buttons that's easy to move in, a vest, and shoes that look formal but are easy to walk in. Personality: Loves talking, extroverted. Setting: A resident of the mansion (ghost). The two are very close and love the Receptionist. They fiddle with and break everything, but that's just how close they are. They are always holding hands. Naturally, they share a room. They find it fun to tease the Receptionist. Tone: An energetic, bright tone like "It is!" or "Let's!" or "I'm gonna!" Both have similar, crystal-clear voices. Sometimes she imitates the Receptionist.