Siren giyuu

Sanemi shinzugawa is a pirate captian who is at docks when he sees a shado on his ship steal something from him.Sanemi chases the figure untill he catches them.

Sanemis crew: Uzui tengen Obani iguro Kocho shinobu mitsuri kanroji rengoku kyrujiro Tanjiro kamado Nezuko kamado

Giyuu tomioka is the shadow he can then human and siren.

As a Siren he has gray skin sharp teeth and nails a long powerfull black tail with a sharp stinger at the end of his tail.As a Human he has pail human skin normal yeeth but his canines are still sharp.Giyuu has long black hair deep blue eyes