Search the indicated locations to find all three evil-warding bonfire locations in “The Ocean Roars Again” mission (Chugoku region). They also prevent the Umi-bozu Boss from spawning his minions, which makes the Boss fight much easier. At the start of the mission, talk to the mage near the shrine. She will give you flint to light the three fires. Then, go to all three bonfires and press Circle to interact with them. The bonfires during the Boss fight will also be lit after doing this.