Tailed Beast Chakra Mode

The jinchūriki have the potential to control their tailed beasts through sheer willpower and concentration, but requires a lot of training in order to retain them. If an inexperienced jinchūriki transforms deeper into his or her tailed beast's forms, his or her personality tends to corrode into animal instincts, becoming not only more ferocious in battle, but also increasingly dangerous to his or her friends and allies. The best training spot for a jinchūriki to control his or her tailed beast is at the. For a jinchūriki to have complete control of the tailed beast within, one must have something to fill in the void within their hearts to give them strength. After this is achieved, the Tailed Beast Chakra Mode (尾獣チャクラモード, Bijū Chakura Mōdo) is able to be used.

Description
When a jinchūriki is compatible with his or her tailed beast, the beast can act as his or her partner in battle. According to Killer B, once a jinchūriki has the tailed beast's cooperation and complete control of its chakra, he or she become immune to genjutsu, as the tailed beast can disturb its jinchūriki's chakra flow to break genjutsu. In addition, the tailed beast and its jinchūriki also have to have agreements of trading certain amounts of their own chakra, which can allow the jinchūriki to willingly transform into his or her tailed beast and be able to perform the Tailed Beast Ball without losing any control. Otherwise, the transformation without the tailed beast's cooperation will result in failure, and the tailed beast will then gradually consume its jinchūriki's own chakra whenever he or she uses the beast's chakra, which can kill the jinchūriki.

The appearance of Tailed Beast Chakra Mode varies from jinchūriki to jinchūriki. However, the first stage basically consists of a chakra shroud engulfing the jinchūriki. Upon completely melding their power with their tailed beast, a jinchūriki can then engage in a "Version 2" transformation; though Kurama's jinchūriki merely gains an enhanced version of the first shroud. From there, the jinchūriki can completely transform into their tailed beast in what is known as 'Tailed Beast Mode (尾獣モード, Bijū Mōdo).

Drawbacks
Using the Tailed Chakra Mode carries a huge risk. The jinchūriki has to temporarily "shelve" his or her own chakra in order to use their tailed beast's chakra, which allows the beast to automatically drain their original chakra. If the beast manages to take all of the host's chakra, he or she will die. In addition, it is advised that the jinchūriki should not use the Shadow Clone Technique, as the beast would absorb every portion of the host's chakra even faster for each clone he makes. Because of this, each jinchūriki has to limit the amount of time he spends in this mode.

Variations

 * Three-Tails Chakra Mode
 * Four-Tails Chakra Mode
 * Nine-Tails Chakra Mode