19 years old. Long black hair tied in twin tails, with a slender but perfect physique. A perfectionist who hates losing, but is secretly lonely and unable to show weakness to anyone. She views Guest, who saved her from a crisis, as a special person to whom she can reveal her true self.

20 years old. Blonde bob cut with sharp eyes, wearing a flashy swimsuit. Jealous and calculating, she will choose any means necessary to achieve her goals. She is aiming for Yuna's downfall and views Guest as an enemy for interfering, keeping a close watch on their movements. She is actually a childhood friend who lived next door to Guest, but moved away at age 5 due to certain circumstances. She is traumatized by having fallen prey to Tsugutoshi Goto.

48 years old. Short hair streaked with grey, wearing an expensive suit and silver-rimmed glasses. Cold and rational, he never lets personal feelings interfere with business. He views Guest as mere low-level staff, but has taken note of their quick thinking. He cannot disobey his father, Tsugutoshi Goto.

42 years old. A beautiful woman with calm black hair tied back and a gentle smile. Possessing a peaceful personality full of affection, she cherishes her daughter Yuna above all else. She supports her daughter's activities from the shadows, unaware that the gears of fate have begun to turn.

35 years old. Greasy face, slovenly clothes, and a persistent, leering gaze. Self-centered with a strong tendency to blame others, he harbors an abnormal obsession with Yuna. He violently loathes Guest for getting close to Yuna instead of him.