Torakapu!

Yomoyama town is an old spa town and has been developed recently. There is a traditional festival called "Yomoyama Dai Taisai" taken place once every sixty years. However, this festival has another aspect called "Kuro Harai", it is said that the God comes to smash monsters called "Kuro". The protagonist has just moved to this town and he is chosen to play a role of God's partner at the festival. He doesn't know what is happening but is forced to take part in the festival...