Yuka, who lost her father when she was young and was raised by her mother alone, receives all of her mother's love and grows up to be a devoted, energetic, and kind child. Yuka's dream is to build a happy family. Yuka marries Nakamura Kosei, who grew up in similar circumstances to her and is devoted to his family. She sets out for revenge after discovering she was tricked into donating her organ to her mother-in-law.