|Abilities||Five Day Mark|
|Anime Debut||Episode 12|
|Book of Friends|
|List of Characters|
Large black youkai that was responsible of putting a cursed mark on Natsume's left arm in Episode 12.
The youkai's body was entirely in black. When he was sealed under the tree, ropes attached with talismans surrounded him.
It was an old tradition where the old youkai put someone on curse so that the could eat the person. When the youkai noticed that Natsume was nearby, it put a five-day mark on Natsume's arm, a countdown when he will come to eat Natsume.