Tarusaru is a youkai that under the pretext.
Appearance[]
Normally he is of human size and seen wearing a black robe. His true form is a gigantic wolf like youkai, much resembling Madara's true form, with only darker fur. He might be just as powerful.
Personality[]
Appears to be playful, Tarusaru enjoys festivals and gatherings. He decides to help Natsume out of curiosity. He mentioned to Natsume that he also had friends he cares about living at the Futaba Village, soon to be submerge in water.
Plot[]
He taking Natsume to Futaba festival, intended to eat him. However, after seeing Natsume's determination to help Tsubame get the transformation robe, he decided to help out Natsume instead.