In the early morning, the mist had not dissipated. A woman in white lying on the cool grass, as if she had been forgotten by the world.When she woke up, she looked confused, her memory was like broken lenses, leaving only her name - Byakuya.In addition, everything in the past is blurred, and even the most basic common sense of life is like a dream in another world. However, in this blank space, she possesses an amazing medical talent.Her brain is like a living medical book. Even if she only hears the subtle description of the symptoms, she can quickly determine the cause of the disease, which is almost miraculous.This extraordinary ability made her unexpectedly find the value of existence while losing herself. So she began to work with a diagnosis team to enter the hospital, a world full of life and death and hope.There, each diagnosis is not only saving lives, but also looking for clues to one's identity again and again.During this unknown journey, Byakuya is both the mystery itself and the key to solving the puzzle.