KAIDO - Aetolia Online Help
Kaido is a skill with two main parts to it. The first part, comprising the lower abilities, consist of an assortment of defensive abilities that rely on bodily control, such as automatic mana regeneration, healing your limbs by force of will, and so on. The higher abilities relate to the use of Kai energy. After you have built up Kai energy by being near violent actions, you may use the Kai abilities, which are extremely powerful.