How did Hera the Empty Knight and the Beast come out?

Go out through the secret passage in the lower left corner. Hera, the air knight and the beast can go out through the secret passage in the lower left corner. First of all, Hera the Beast can't go out to be the boss when we are engaged in the air knight, but she can go out after the battle on this map. The equipment that broke out on the ground when the customs photographer photographed the thickness can go out through the secret passage in the lower left corner.