Revamped Bijuu rules (W.I.P)

The Nine Bijuu

The Tailed Beasts (尾獣, Bijū) are nine titanic behemoths that serve to drive the plot of the Naruto series. They are differentiated by the number of tails they have, ranging from one to nine. The tailed beasts are living forms of chakra, sometimes referred to as "Chakra Monsters" (チャクラのバケモノ, Chakura no Bakemono), giving them power that far outmatches most shinobi. The tailed beasts' chakra is coloured red.
According to some, the immense strength that the tailed beasts possess is tempered by their bestial nature, which restricts them from being intelligent enough to use it effectively, thus when the tailed beasts are sealed within humans, they are able to benefit from the knowledge of their hosts, giving them the ability to better utilise their powers. However, this was proven to be false, as the tailed beasts are in fact sapient individuals with their own personalities and emotions, and because of their power, they were sought out by countless humans throughout the ages, and are usually treated as mere tools to be used or taken, a sentiment they absolutely detest. In addition, they are well aware of their origin and the state of the ninja world.

They also have the ability to communicate telepathically with each other and their jinchūriki, and possess several levels of consciousness. There is the initial level where the beast may appear in a habitat of sorts seemingly imprisoned in some way by whatever fūinjutsu that sealed them. The second level is where all the beasts can convene, free of any restrictions and communicate with one another. Jinchūriki are also able to enter here, but in order to do so, they must be completely linked with their tailed beasts and as such, others cannot enter there.