Due to the Box of Ultimate Bliss, its body can detect fear and blood lust, which causes it to instinctively dodge essentially all attacks from opponents who have any fear in them or who desire to kill him. Despite its large size, it is a deceptively fast and agile flyer. It can shoot its feathers and giant spheres at high speeds which have powerful piercing and explosive power, respectively. It also has a long thin tail, and its hands and feet are clawed and sickly thin to the point where it looks almost bone-like with skin attached. It is headless, with bones potruding from the mouth on its chest and is covered in black feathers.

The beast is large, similar in size to Gamabunta and the Eight-Tails, with large wings. A person who enters the box and comes back out will become the host of Satori, gaining the demon's powers while having their mind corrupted, and Satori will proceed to throw victims into the box. Little is known about Satori except that it has been around since the time of the Sage of the Six Paths and that Satori is merely a puppet of the Box. Beyond that, like the Box, Satori's history is overall a mystery. Satori unleashed into the world in the past.Īccording to Gamabunta, the Box of Ultimate Bliss 'brings forth', 'actuates', and 'ends' with Satori.

Naruto blood prison plot