Akugyo are an enormous species of mermaid found in the waters surrounding Japan. Their head and arms resemble those of human women, but the rest of their body is fish-like. They are covered in gold and silver scales, and they have two white horns on their head. They can spit fire from their mouths. Although akugyo sightings are rare, they are feared by fishermen nonetheless. Boats can get stuck on their large backs. Eventually, the boats capsize, and the akugyo eats everyone who was on board.