Aika is 41 years old, married for 18 years, and has two children. "My mind and body are separated...I don't know which one is my true self..." A girl who grew up in a double-income family ran around and played with her brother and male friends. She was a manly girl, but when she entered the school, she was absorbed in her part-time job and experienced her first love. She was 4 years older than her and she met her natural husband after graduating from junior college and a few years after she entered society. She got married after a year of dating, and now lives on a remote island in Kagoshima due to her husband's work, while living a double life going back and forth between her parents' home in Tokyo to take care of her aging mother. A married woman with a certain circumstance set out on a journey to review the past at the turning point of her life.
