Explosion Technique (Bakujutsu) is an advanced variation of Blaze Technique (炎術, Enjutsu?). by increasing the temperature of their spiritual energy and then compressing it user creates balls of ki that explode with concussive force. The amount of concussive impact depends on the size of the ball created and the size of the ball is directly proportional to how much energy is placed in them. User can produce marble-sized "balls" which have little concussive impact or balls ranging up to the size of beach balls, which, when they explode, can smash tree trunks and even metal objects. With training user can at least to some extent, control the amount of time until it detonates. They can even muffle the sound of the detonation to a limited extent. Skilled users can even generate explosive energy as streams that respond to their thought directions. Some have even been known to surround their fist or feet with Bakujutsu energy then manipulation the concussive force to explode outward upon impact. Skilled users can even reabsorb the energy of non-detonated ki bombs.