- Hana Matsuzaki (Mother)
- Yūichirō Sawamura (Deceased Husband)
- Umi Matsuzaki (Daughter)
- Sora Matsuzaki (Daughter)
- Riku Matsuzaki (Son)
- The name Ryoko means "good, virtuous, respectable" (良) (ryo) and "child" (子) (ko).
- Ryoko's surname Matsuzaki means "pine tree, fir tree" (松) (matsu) and "cape, peninsula" (崎) (saki/zaki).
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