Today is Setsubun 節分
Today, February 3rd, 2020 is Setsubun in Japan.
Setsubun literally means "the day between two seasons". People celebrate Setsubun on either the 3rd of February, the last day of winter, and the day before the spring season on the present calendar.
It is believed that *oni come when the seasons change in Japan.
*Oni : a devil-like creature from Japanese folklore.
Bean throwing, called mamemaki, is done at home on the day of Setsubun.
Throwing roasted soybeans was first practiced back in the Heian period, to stop oni from attacking villages by throwing beans at their eyes.
People scatter roasted soy beans inside and outside their houses shouting, "Fortune in, Devils out." Then they eat the same number of beans as their age or one more of their age and wish for good health.
Why do they use the roasted beans? This is because left behind beans will not bud (meaning demon will not rise).