The Usokae Festival is held every January at the Kameido Tenmangu (Tenjin) Shrine. "Uso" means bullfinch, and "kae" means to change. The bullfinch is a symbol of good luck, and uso can also mean "lie."

People replace their wooden uso dolls believing that the previous year's bad luck was a lie, to be exchanged for good luck in the new year with the new uso doll.