Book#001 Japanesque Collection, Themes: Medical Accident / Accidental Transition, Keywords: Medical Accident, Accidental Transition, Gender Swap, Feminization, 1990s Japan, Arranged Marriage, Doppelganger, TGTF

One name. Two patients. An irreversible mistake.
Hiromi Yamashita enters Ohtsuki Hospital for a routine procedure, expecting to be discharged in a few days. But a mix-up in the operating room changes his destiny forever. Due to a clerical error and a missing patient with the same name, Hiromi wakes up to find he has undergone full sex reassignment surgery.
With his body irrevocably altered and his old life shattered, Hiromi faces a terrifying choice offered by the hospital director: destitution, or a cover-up that includes a new family, a new name, and a new life as a woman. Forced to adapt to a world of makeup, skirts, and societal expectations he never asked for, Hiromi is eventually arranged into a marriage to a widower who needs a mother for his children.
But what happened to the other Hiromi, the one who was supposed to have the surgery? As their paths converge, this pioneering work of Japanese gender fiction asks a difficult question: Is gender defined by the mind, the body, or the role society forces us to play?
(Originally published in 1997, this novel is a classic of the genre, exploring themes of resilience and adaptation in an era of rigid gender roles.)
Content Warning: Contains themes of severe medical malpractice (non-consensual surgery), body horror elements (clinical descriptions of altered anatomy), and coerced domestic roles.
Heat Level (1-5) 3 (Sensual/Psychological) The story explores the physical reality of the new body and marital intimacy, but the tone is often melancholic or dutiful rather than purely erotic.