Kayoko Mashiro (真白 加代子 Mashiro Kayoko) is the mother of Moritaka Mashiro who appears occasionally through the story.
Etymology
- The name Kayoko means "add, increase" (加) (ka), "generation" (代) (yo) and "child" (子) (ko). '
- Kayoko's surname Mashiro means "real, genuine" (真) (ma) and "castle" (白) (shiro).