This drama is about a girl who was diagnosed with a disease called Spinocerebellar Degeneration when she was 15 years old, and was able to continue her life until her death at the age of 25 years old. The plot is based on the true story of a Japanese girl named Kito Aya, who had the same disease. She kept writing in her diary to remember her experiences until she could no longer hold a pen. Aya s...