Kiriko, who grew up in an orphanage, was taken in by the Hiratsuka family, a large landowner, as a live-in housekeeper 24 years ago. Soon after, she was forced by Tomio, the head of the family, to perform a service different from that of her housekeeper. She had no choice but to serve like a slave. Her Tomio's son, Yutaka, became her support. Yutaka's affection for her since the day she was born made her most happy, but there was a secret between the two of them...
