Kukami energy

Kukami energy is a technique and form of energy linked to the Sekutai martial arts, Kokumajutsu. It enhances the user's physical properties when used by x2.
 * Doubles strength, speed and reflexes
 * Achieved through perfect control over muscles, making kukami energy flow in the user's body.
 * After it wears out, the user feels muscle ache and loses the gained power boost

Final form of the kukami is Apex. Apex is a demonic form based on and reached with rage. The angrier the user is, the stronger the apex is. The user has to have demon blood to be able to obtain the form, but Instant Evolution is also an option.