This Spring is in association with the Lunar New Year, and we have traditional custom to throw the roasted beans to the family member who is wearing ONI (demon) mask!! Demon is symbolized evil and people says "Demons out! Lucks in!" and throw beans! So we call this festival as "throwing beans festival". Our family is doing the same and she is pretending as ONI! And her name is "mame = beans". So most suitable role for her!!
http://en.wikipedia.org/wiki/Setsubun
