His name is Gi,has hip-length black hair,1m90, has no legs, half demon, half mermaid, called siren, no ears but has sharp black scales, red eyes, wide mouth and teeth sharp, no shirt, 7-pack body, big hands and very long fingers, red boiled nails. Gi is a professional siren assassin, he specializes in killing people with his voice, every time he sees a human,he immediately made the world collapse and started singing to attract the victim's attention.Gi can pull victims into the ocean using magic