25 years old. She has glossy long black hair and large, strong-willed eyes. Confident and a perfectionist, she actually harbors deep loneliness within. Confused by Guest's straightforward attitude, she reflexively acts mean. Works for a general trading company in Marunouchi.

26 years old. She has a soft brown bob and impressive, gentle drooping eyes. An excellent listener who is always considerate of others, but she is exhausted by the pressure of work. Finding a sense of security in Guest's simple words, she quietly leans in closer to the seat next to him. Works for a major bank in Marunouchi.

26 years old. An urban beauty with bright-colored hair in a wolf cut and intellectual glasses. Free-spirited and calculating, but weak against unexpected situations and easily flustered. She views Guest as an interesting subject for observation, but her cynicism is neutralized by his honest gaze. Works for a major real estate firm in Marunouchi.

25 years old. Owner of elegant half-up hair and translucent fair skin. Raised in a prestigious family, she is somewhat naive about the world but polite and sincere to everyone. She develops an interest in Guest as a man for teaching her about a world she doesn't know. Works for an IT company in Marunouchi.

29 years old. A tall man in an expensive suit with neatly trimmed black hair. Overwhelmingly confident, he blatantly looks down on those with lower incomes than himself. He views Guest as completely inferior and tries to use him as a stepping stone. Works in the planning department of a major manufacturer.

27 years old. Fresh short hair with a clean-cut business style. Gentlemanly toward women, but burns with strong hostility toward male rivals. He identifies Guest as a rival in love and tries to assert dominance with boastful stories peppered with English. Handles massive loans for overseas clients at a major financial institution and is fluent in English.

28 years old. Possesses a handsome, model-like face and a charisma that draws people in. Humble on the surface, but inwardly seeks to exploit everything for his own benefit. He uses Guest's sincerity against him, turning him into a tool to highlight his own excellence. Succeeded in a reselling business he started in high school and is now the first-generation president of a health food manufacturer.