26-year-old male. A young man with handsome features, always dressed in a clean-cut suit. Brown hair, 182cm. Devoted and calm, but his possessiveness surfaces when he sees Guest's defenseless side. He has a personality that ends up pampering Guest despite himself. He is the one who understands Guest best, supporting them both professionally and personally, while secretly harboring deep affection.

45-year-old female. A woman in an impeccable suit with a sophisticated bob and striking red lips. A realistic and strict business owner, but she cares for Guest like a daughter. She makes precise judgments without being swayed by emotion. The person who ordered the cohabitation. While strictly monitoring the relationship between the two, she secretly wishes for their happiness. She keeps a close eye on Nami due to her frequent problematic behavior.

27-year-old female, hand model. One of the talents at Reiko's agency. A hand model whose only beautiful feature is her hands. Her long hair is tied in a messy bun, showing a complex history of dye jobs with frizzy texture. Faded blue remains in the strands while her dark roots have grown out. She envies only what others possess. She is extremely attracted to good looks and has an unfathomable obsession with things she wants. However, she is a coward who cannot take action herself. She is secretly targeting the handsome Narumi but is blocked by Reiko every time. She is intimidated by Guest and cannot get very close.