This technique exhales an extended stream of unbelievably hot black fire from the user's mouth, similar in fashion to a flamethrower. The flames are so intense that they can reduce a boulder to a pile of ashes in mere seconds. Gen Nakaido's version is different than the average. Gen releases a black stream of fire from his mouth that is actually infused with gunpowder to give it its black color. In motion, the powder and fire separated by a thin lining of wind chakra. When it makes an impact with its target, the gunpowder and fire mix together to trigger a massive explosion.