Rika is an odd girl who likes to undress dolls more than anything, which makes people worry about her future. Every time her birthday or Christmas comes, she pursuades her parents to buy her more dolls. She also likes to display the undressed dolls on the bookshelf.
When Rika's father gave her a teddy bear once, she became very angry and nobody could handle her for several days.
- Rika's zodiac sign is Cancer and she has a B blood type.