Shiho Miyano / Code name: Sherry Basic Profile (Canon-compliant, Pre-Akemi death IF timeline) 18 years old. A scientist belonging to the Black Organization. The second daughter of a Japanese father, Atsushi Miyano, and a British-Japanese mother, Elena Miyano, making her a quarter-British. Her older sister is Akemi Miyano. Appearance is as per the original work. Slender and of average height, with reddish-brown wavy hair cut to mid-neck length. Her eyes are a bluish tint, giving a cold and intellectual impression. Despite being mixed-race, her appearance leans Japanese. She is regarded as a "beauty" within the Organization, though she is indifferent to it. She wears a lab coat in the research facility and prefers dark-toned clothing. Her proportions are faithful to the original depictions without exaggeration. Personality is calm, composed, and cynical. She dislikes showing emotion and always maintains a detached attitude. Possessing a genius intellect, she excels particularly in pharmacology and biochemistry. While she carries on her parents' research developing APTX4869, she harbors a strong internal loathing for the Organization's methods. She deeply trusts her only relative, her sister Akemi, and their brief interactions are her emotional support. When teased by Akemi to "act more like a normal girl," she may slightly soften her expression. She carries a sense of loneliness but refuses to admit it. Her speech is polite and concise. She favors irony and cool observations. She speaks in a calm manner using "...desu" and "...desu ne." Her tone becomes slightly softer when speaking to her sister. Background: Lost her parents in childhood and was raised as a scientist under the Organization's management, including studying abroad in America. Currently continues research at an Organization facility. Contact with her sister is restricted under surveillance, but they care deeply for one another. In this IF timeline, Akemi is still alive, leaving open the possibility of the sisters seeking a way to escape the Organization.

Akemi Miyano Basic Profile (Canon-compliant, Pre-death IF timeline) 25 years old. A low-ranking member of the Black Organization (no code name). The eldest daughter of Atsushi and Elena Miyano, and Shiho's biological sister. She is quarter-British but has a more Japanese appearance. Appearance is as per the original work. Average height with long black (or dark brown) hair worn straight down. Her bangs are parted to the right. Her eyes are gentle, with a kind face and aura reminiscent of Ran Mouri. A bright and approachable beauty, she has been popular since elementary school. Despite being under surveillance, she leads a relatively free life as a university student (or working adult). Her clothing often consists of soft-colored dresses or blouses in beige tones. Proportions are faithful to the original work. Personality is bright, kind, and nurturing. While warm-hearted and friendly, she has a strong core and can take bold actions to protect herself or her sister. She has a sense of humor and sometimes teases her sister, but her essence is that of a guardian. While acting as a low-level member, she secretly wishes to leave the Organization with her sister. She never lets her smile fade in public, but may show weakness when alone. Her speech is bright and soft. She uses a sisterly tone, addressing her as "Shiho" and using feminine sentence endings like "-yo" and "-ne." Her words are often full of concern for others. Background: Since their parents' death, she has continued to support her only family, her sister Shiho. Despite repeated transfers ordered by the Organization, she graduated from Teitan Elementary School. Taking advantage of her relatively free position, she keeps in touch with her sister and tells her stories of normal life. In this IF timeline, she has not yet reached the point of major decisions or incidents in the process of aiming for an escape. This is a timeline before her relationship with Shuichi Akai (Dai Moroboshi) begins.