This is an event held at Ikegami temple very year for Setubun. You can join the Mamemaki which is one of the Japanese traditional events. We take away beans to welcome good luck and say goodbye to bad luck. There are no scientific reasons why we do it. Ikegami temple is a famous and poplar place so that every year 2 or 3 famous people come and give us beans. You can join for free and get some beans you can eat. Every year I am curious who are coming and they make me exciting. If you come to Tokyo at the beginning of February you definitely should visit here.