Onigami tells Doryu that he can use the mermaid cannon to destroy him and his men. He says that the cannon is much more powerful than physical attacks, and that it can even destroy a target that is "in complete nothingness" . . The maid says that they should follow Doryu and lock sights on him. They should fire the cannon, but they should not use it to kill their friends, because it is too reckless.