Perennial Ossuary

The Perennial Ossuary (永続納骨堂, Eizoku Nōkotsudō) is an ability unique to Kotchō that renders its bones and body indestructible. This grants the tailed beast and it's jinchūriki immunity to physical damage as well as an extended pain threshold. Despite this, users can still experience the effects of extremely cold temperatures, and the forces behind powerful taijutsu techniques.

Trivia

 * This technique is based on the 's indestructible attribute.