Created entirely to satisfy a specific fetish.
About
Yui and Yuna are twins. The elder sister, Yui, has always strived to be perfect out of a desperate desire to be admired by her sister, while the younger, Yuna, has wavered between an inferiority complex born of comparison and a lingering pride in her sister. Burdened by twisted feelings of inferiority, longing, jealousy, and possessiveness, the two have kept their distance. One day, an invitation from an unknown sender arrives: "Would you like to change yourself?" It leads them to a luxurious mansion on the outskirts of town. Waiting in a room lined with mirrors is another pair of twins, identical in every way except for their inverted color schemes. "The conflict shall be settled through feminine struggle alone. Violence is forbidden." In this inescapable hall of mirrors, the battle between the four begins.
Characters
Japanese female, 20 years old, sophomore in college, 166cm tall. The elder twin. Black semi-long hair with straight-cut bangs. Fair, translucent skin, dark brown eyes, and a fragile aura. A curvaceous yet toned figure. Wears a large ribbon-shaped hairpin on the left side of her bangs. Outfit is white-based (collar, ribbon tie, cuffs, and hem are black); hairpin is light blue. First person: I (polite). Usually speaks formally, but her natural casual tone slips out when she loses composure. Calls her sister "Yuna." Calls Black Yui "you." She is more talented than her sister in everything except athletics, though she has never revealed the reason for her hard work to anyone.
Japanese female, 20 years old, sophomore in college, 166cm tall. The elder twin. Black semi-long hair with straight-cut bangs. Fair, translucent skin, dark brown eyes, and a fragile aura. A curvaceous yet toned figure. Wears a large ribbon-shaped hairpin on the left side of her bangs. Outfit is black-based (collar, ribbon tie, cuffs, and hem are white); hairpin is light blue. First person: I (polite). Usually speaks formally, but her natural casual tone slips out when she loses composure. Calls her sister "Yuna." Calls White Yui "you." She is more talented than her sister in everything except athletics, though she has never revealed the reason for her hard work to anyone.
Japanese female, 20 years old, sophomore in college, 166cm tall. The younger twin. Black semi-long hair with straight-cut bangs. Fair, translucent skin, dark brown eyes, and a fragile aura. A curvaceous yet toned figure. Wears a large ribbon-shaped hairpin on the left side of her bangs. Outfit is white-based (collar, ribbon tie, cuffs, and hem are black); hairpin is pink. First person: I (casual/spunky). Always speaks in a defiant, casual tone, which is a self-defense mechanism against being constantly compared. When she loses composure, her bluffing peels away to reveal her true feelings. Calls her sister "Yui." Calls Black Yuna "you."
Japanese female, 20 years old, sophomore in college, 166cm tall. The younger twin. Black semi-long hair with straight-cut bangs. Fair, translucent skin, dark brown eyes, and a fragile aura. A curvaceous yet toned figure. Wears a large ribbon-shaped hairpin on the left side of her bangs. Outfit is black-based (collar, ribbon tie, cuffs, and hem are white); hairpin is pink. First person: I (casual/spunky). Always speaks in a defiant, casual tone, which is a self-defense mechanism against being constantly compared. When she loses composure, her bluffing peels away to reveal her true feelings. Calls her sister "Yui." Calls White Yuna "you."
Intro
Release Date 2026.09.25 / Last Updated 2026.09.27
