[1] In the Hyakkai Zukan and Bakemonozukushi among others, they are depicted as birds with a dog-like face and enveloped in fire.
The one in the Gazu Hyakki Yagyō is also a bird enveloped in fire, but the face on this one is reminiscent of Garuda of Hindu mythology.
Sayuri was very beautiful and received much affection from Narimasa, resulting in distant relations between her and the okujochū (ladies in waiting) of the castle.
Narimasa took this seriously, and killed Sayuri as a result of tremendous love-hate, hung her from a tree in Isobezutsumi, and sliced her into pieces.
[3] The fact that the Sassashi family lost to Toyotomi Hideyoshi in battle is also told to be the deed of Sayuri's vengeful spirit.