Today is Setsubun.
It is the day for the change of seasons–it means the end of winter.
People drive evil spirits out of a person by throwing beans at night.
Usually the father plays a demon and the children throw beans at him.
While they threw beans, they call ” Demon go outside, happiness is inside. (Oni wa soto. Fuku wa uchi.)
And people eat beans in the same amount as their age.
The beans are usually roasted soybeans.