Sirens

Major rivals to the Night Sparrows, the Sirens also possess amazing vocal talents, although they mostly rely on hypnotism instead of the Night Sparrows' singing contests. Also in differentiation to the Night Sparrows, who are usually found in dense forests and the like, the Sirens are exclusively sea-faring.

Almost as snobby as the Yuki-Onna, and violent as the type A Vampire, woe unto the poor soul who is entrapped by their deceitful songs and voices. Nobody knows what they do when then catch you, but it's been narrowed down to either being drowned and eaten, or just plain darn eaten.