Boil Release: Unrivalled Strength

Boil Release: Unrivaled Strength is a ninjutsu fighting style used by the Five-Tails Kokuō and its jinchūriki.

Usage
By increasing the temperature of chakra to its boiling point, large amounts of steam are generated, which greatly augment the physical power of the user, giving him unrivalled physical strength. The pressure of the steam can be controlled by a special armour which was worn by Kokuō's previous jinchūriki Han. By releasing the pressure, not only the strength can be improved, but also the speed.